{"id":2084,"date":"2025-03-28T15:10:56","date_gmt":"2025-03-28T07:10:56","guid":{"rendered":"http:\/\/ericw.top\/?p=2084"},"modified":"2025-04-08T15:49:26","modified_gmt":"2025-04-08T07:49:26","slug":"css-%e8%af%be%e7%a8%8b%e7%ac%94%e8%ae%b0","status":"publish","type":"post","link":"http:\/\/ericw.top\/?p=2084","title":{"rendered":"CSS \u8bfe\u7a0b\u7b14\u8bb0"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"toc-0\">CSS \u7b2c\u4e00\u5929<\/h2>\n\n\n\n<p><strong>\u5c42\u53e0\u6837\u5f0f\u8868 <\/strong>(Cascading Style Sheets\uff0c\u7f29\u5199\u4e3a CSS\uff09<\/p>\n\n\n\n<p>\u662f\u4e00\u79cd <strong>\u6837\u5f0f\u8868<\/strong> \u8bed\u8a00\uff0c\u7528\u6765\u63cf\u8ff0 HTML \u6587\u6863\u7684\u5448\u73b0\uff08\u7f8e\u5316\u5185\u5bb9\uff09<\/p>\n\n\n\n<p>\u4e66\u5199\u4f4d\u7f6e\uff1a<code class=\"prettyprint\" >title<\/code> \u6807\u7b7e\u4e0b\u65b9\u6dfb\u52a0 <code class=\"prettyprint\" >style<\/code> \u53cc\u6807\u7b7e\uff0c<code class=\"prettyprint\" >style<\/code> \u6807\u7b7e\u91cc\u9762\u4e66\u5199 CSS \u4ee3\u7801\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"516\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-76-1024x516.png\" alt=\"\" class=\"wp-image-2067\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-76-1024x516.png 1024w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-76-300x151.png 300w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-76-768x387.png 768w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-76-1536x774.png 1536w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-76-2048x1032.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u4f8b\u5982\u4e0a\u56fe\u7684\u6587\u5b57\u5c45\u4e2d\u6837\u5f0f\uff0c\u56fe\u7247\u5927\u5c0f\u8bbe\u7f6e\uff0c\u5757\u5143\u7d20\u6392\u5217\uff0c\u90fd\u9700\u8981CSS\u6765\u64cd\u4f5c<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc-1\">1.1 CSS\u7684\u5b9a\u4e49<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >&lt;title&gt;CSS\u5b9a\u4e49&lt;\/title&gt;\n&lt;style&gt;\n\/* \u9009\u62e9\u5668 {} *\/\nbody{\n    background-color: rgb(255, 255, 255);\n}\np{\ncolor:red;\n}\n&lt;\/style&gt;\n&lt;\/head&gt;\n&lt;body&gt;\n    &lt;p&gt;\u4f53\u9a8c CSS&lt;\/p&gt;\n&lt;\/body&gt;<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<p><strong><em>\u8bfe\u5802\u4f5c\u4e1a\uff1a22<\/em><\/strong><\/p>\n\n\n\n<p><strong><em>\u8bfe\u5802\u63d0\u95ee\uff1a<\/em><\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"891\" height=\"973\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-77.png\" alt=\"\" class=\"wp-image-2075\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-77.png 891w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-77-275x300.png 275w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-77-768x839.png 768w\" sizes=\"(max-width: 891px) 100vw, 891px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc-2\">1.2 CSS\u7684\u5f15\u5165\u65b9\u5f0f<\/h2>\n\n\n\n<p>CSS\u4e5f\u53ef\u4ee5\u5355\u72ec\u4e66\u5199\uff0c\u5b58\u653e\u4e8e\u5916\u90e8\uff0c\u7ba1\u7406\u66f4\u52a0\u65b9\u4fbf<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"837\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-78-1024x837.png\" alt=\"\" class=\"wp-image-2077\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-78-1024x837.png 1024w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-78-300x245.png 300w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-78-768x628.png 768w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-78.png 1198w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p><strong><em>\u8bfe\u5802\u4f5c\u4e1a\uff1a23<\/em><\/strong><\/p>\n\n\n\n<p><strong><em>\u8bfe\u5802\u63d0\u95ee\uff1a<\/em><\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"421\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-79-1024x421.png\" alt=\"\" class=\"wp-image-2079\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-79-1024x421.png 1024w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-79-300x123.png 300w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-79-768x316.png 768w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-79.png 1284w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc-3\">1.3 \u9009\u62e9\u5668<\/h2>\n\n\n\n<p>\u4f5c\u7528\uff1a<strong>\u67e5\u627e\u6807\u7b7e<\/strong>\uff0c\u8bbe\u7f6e\u6837\u5f0f<\/p>\n\n\n\n<p>CSS\u4e3a\u4e86\u9002\u5e94\u5404\u6837\u7684\u573a\u666f\uff0c\u51c6\u5907\u4e86\u591a\u79cd\u9009\u62e9\u5668<\/p>\n\n\n\n<p>\u57fa\u7840\u9009\u62e9\u5668\uff1a<\/p>\n\n\n\n<ul>\n<li>\u6807\u7b7e\u9009\u62e9\u5668<br>\u4f7f\u7528<strong>\u6807\u7b7e\u540d<\/strong>\u4f5c\u4e3a\u9009\u62e9\u5668\uff0c\u9009\u4e2d<strong>\u540c\u540d\u6807\u7b7e<\/strong>\u8bbe\u7f6e<strong>\u76f8\u540c\u7684\u6837\u5f0f<\/strong><br>\u4f8b\u5982\uff1ap , h1 , div , a , img<\/li>\n\n\n\n<li>\u7c7b\u9009\u62e9\u5668<br>\u6b65\u9aa41\uff1a\u5b9a\u4e49\u7c7b\u9009\u62e9\u5668  <code class=\"prettyprint\" >.\u7c7b\u540d<\/code><br>\u6b65\u9aa42\uff1a\u4f7f\u7528\u7c7b\u9009\u62e9\u5668  \u6807\u7b7e\u4e2d\u6dfb\u52a0  <code class=\"prettyprint\" >class=&quot;\u7c7b\u540d&quot;<\/code>\n<ul>\n<li>\u7c7b\u540d\u81ea\u5b9a\u4e49\uff0c\u4f46\u662f\u4e0d\u8981\u4f7f\u7528\u7eaf\u6570\u5b57\u6216\u4e2d\u6587\uff0c\u5c3d\u91cf\u4f7f\u7528\u82f1\u6587\u547d\u540d\uff0c\u591a\u4e2a\u5355\u8bcd\u8fde\u7528\u53ef\u4ee5\u52a0 <code class=\"prettyprint\" >-<\/code> \u8fde\u63a5<\/li>\n\n\n\n<li>\u4e00\u4e2a\u7c7b\u9009\u62e9\u5668\u53ef\u4ee5\u7ed9\u591a\u4e2a\u6807\u7b7e\u4f7f\u7528<\/li>\n\n\n\n<li>\u4e00\u4e2a\u6807\u7b7e\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u4e2a\u7c7b\u540d\uff0c\u7c7b\u540d\u4e2d\u95f4\u7528\u7a7a\u683c\u9694\u5f00 <code class=\"prettyprint\" >class=&quot;\u7c7b\u540d1 \u7c7b\u540d2&quot;<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>id\u9009\u62e9\u5668<br>id\u9009\u62e9\u5668\uff0c\u4e00\u822c<strong>\u914d\u5408JS<\/strong>\u4f7f\u7528\uff0c\u5f88\u5c11\u7528\u6765\u8bbe\u7f6eCSS\u6837\u5f0f<br>\u6b65\u9aa41\uff1a\u5b9a\u4e49id\u9009\u62e9\u5668  <code class=\"prettyprint\" >#id\u540d<\/code><br>\u6b65\u9aa42\uff1a\u4f7f\u7528id\u9009\u62e9\u5668  \u6807\u7b7e\u91cc\u6dfb\u52a0  <code class=\"prettyprint\" >id=&quot;id\u540d&quot;<\/code>\n<ul>\n<li><strong>\u540c\u4e00\u4e2aid\u9009\u62e9\u5668\uff0c\u5728\u4e00\u4e2a\u9875\u9762\u53ea\u80fd\u4f7f\u7528\u4e00\u6b21<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u901a\u914d\u7b26\u9009\u62e9\u5668<br>\u67e5\u627e\u9875\u9762<strong>\u6240\u6709\u6807\u7b7e<\/strong>\uff0c<strong>\u8bbe\u7f6e\u76f8\u540c\u6837\u5f0f<\/strong>\u3002<br>\u901a\u914d\u7b26\u9009\u62e9\u5668\uff1a <code class=\"prettyprint\" >*<\/code>\uff0c\u4e0d\u9700\u8981\u8c03\u7528\uff0c\u6d4f\u89c8\u5668\u81ea\u52a8\u67e5\u627e\u9875\u9762\u6240\u6709\u6807\u7b7e\uff0c\u8bbe\u7f6e\u76f8\u540c\u7684\u6837\u5f0f<br><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"559\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-4-1024x559.png\" alt=\"\" class=\"wp-image-2156\" style=\"width:742px;height:auto\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-4-1024x559.png 1024w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-4-300x164.png 300w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-4-768x419.png 768w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-4-1536x839.png 1536w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-4.png 1558w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc-4\">1.4 \u753b\u76d2\u5b50<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"483\" height=\"642\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-82.png\" alt=\"\" class=\"wp-image-2104\" style=\"width:213px;height:auto\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-82.png 483w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-82-226x300.png 226w\" sizes=\"(max-width: 483px) 100vw, 483px\" \/><\/figure>\n\n\n\n<p>\u4e24\u4e2a<code class=\"prettyprint\" >div<\/code>\u5e94\u8be5\u4f7f\u7528\u4ec0\u4e48\u9009\u62e9\u5668\uff0c\u4e24\u4e2a\u76d2\u5b50\u5927\u5c0f\u5c3a\u5bf8\u4e0d\u540c\uff0c\u989c\u8272\u4e0d\u540c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"683\" height=\"335\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-83.png\" alt=\"\" class=\"wp-image-2105\" style=\"width:401px;height:auto\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-83.png 683w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-83-300x147.png 300w\" sizes=\"(max-width: 683px) 100vw, 683px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc-5\">1.5 \u6587\u5b57\u63a7\u5236\u5c5e\u6027<\/h2>\n\n\n\n<p><strong>\u4f5c\u7528\uff1a\u7f8e\u5316\u6587\u5b57<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"711\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-6-1024x711.png\" alt=\"\" class=\"wp-image-2166\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-6-1024x711.png 1024w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-6-300x208.png 300w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-6-768x533.png 768w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-6.png 1036w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u6587\u5b57\u63a7\u5236\u5c5e\u6027\u5c31\u662f\u53ef\u4ee5\u76f4\u63a5\u63a7\u5236\u6587\u5b57\u7684\u6837\u5f0f\uff0c\u4f8b\u5982\u5b57\u4f53\u5927\u5c0f\u3001\u7c97\u7ec6\u7b49\u7c7b\u578b<\/p>\n\n\n\n<p><strong>1\u3001\u5b57\u4f53\u5927\u5c0f<\/strong><\/p>\n\n\n\n<p>\u5c5e\u6027\u540d\uff1afont-size<\/p>\n\n\n\n<p>\u5c5e\u6027\u503c\uff1a\u6587\u5b57\u5c3a\u5bf8\uff0cPC \u7aef\u7f51\u9875\u6700\u5e38\u7528\u7684\u5355\u4f4d <code class=\"prettyprint\" >px<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >p {\nfont-size: 30px;\n}<\/code><\/pre>\n\n\n\n<p>\u7ecf\u9a8c\uff1a\u8c37\u6b4c\u6d4f\u89c8\u5668\u9ed8\u8ba4\u5b57\u53f7\u662f16px<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>2\u3001\u5b57\u4f53\u7c97\u7ec6<\/strong><\/p>\n\n\n\n<p>\u5c5e\u6027\u540d\uff1afont-weight<\/p>\n\n\n\n<p>\u5c5e\u6027\u503c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"543\" height=\"534\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-86.png\" alt=\"\" class=\"wp-image-2108\" style=\"width:228px;height:auto\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-86.png 543w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-86-300x295.png 300w\" sizes=\"(max-width: 543px) 100vw, 543px\" \/><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >\/* \u4e0d\u52a0\u7c97 *\/\nfont-weight: 400;\n\/* \u52a0\u7c97 *\/\nfont-weight: 700;<\/code><\/pre>\n\n\n\n<p><strong>3\u3001\u5b57\u4f53\u6837\u5f0f\uff08\u662f\u5426\u503e\u659c\uff09<\/strong><\/p>\n\n\n\n<p>\u4f5c\u7528\uff1a\u6587\u5b57\u7684\u503e\u659c\u6548\u679c<\/p>\n\n\n\n<p>\u5c5e\u6027\u540d\uff1afont-style<\/p>\n\n\n\n<p>\u5c5e\u6027\u503c<\/p>\n\n\n\n<p>\u2022 \u6b63\u5e38\uff08\u4e0d\u503e\u659c\uff09\uff1anormal<\/p>\n\n\n\n<p>\u2022 \u503e\u659c\uff1aitalic<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>4\u3001\u884c\u9ad8<\/strong><\/p>\n\n\n\n<p>\u4f5c\u7528\uff1a\u8bbe\u7f6e\u591a\u884c\u6587\u672c\u7684\u95f4\u8ddd<\/p>\n\n\n\n<p>\u5c5e\u6027\u540d\uff1aline-height<\/p>\n\n\n\n<p>\u5c5e\u6027\u503c<\/p>\n\n\n\n<p>\u2022 \u6570\u5b57 + px<\/p>\n\n\n\n<p>\u2022 \u6570\u5b57\uff08\u5f53\u524d\u6807\u7b7efont-size\u5c5e\u6027\u503c\u7684\u500d\u6570\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >line-height: 30px;\n\n\/* \u5f53\u524d\u6807\u7b7e\u5b57\u4f53\u5927\u5c0f\u4e3a16px *\/\n\nline-height: 2;<\/code><\/pre>\n\n\n\n<p><strong>\u884c\u9ad8\u7684\u6d4b\u91cf\u65b9\u6cd5\uff1a\u4ece\u4e00\u884c\u6587\u5b57\u7684\u6700\u9876\u7aef\uff08\u6700\u5e95\u7aef\uff09\u91cf\u5230\u4e0b\u4e00\u884c\u6587\u5b57\u7684\u6700\u9876\u7aef\uff08\u6700\u5e95\u7aef\uff09\u3002<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"243\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-87-1024x243.png\" alt=\"\" class=\"wp-image-2111\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-87-1024x243.png 1024w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-87-300x71.png 300w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-87-768x182.png 768w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-87-1536x364.png 1536w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-87-2048x485.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u5782\u76f4\u5c45\u4e2d\u6280\u5de7\uff1a<strong>\u884c\u9ad8\u5c5e\u6027\u503c\u7b49\u4e8e\u76d2\u5b50\u9ad8\u5ea6\u5c5e\u6027\u503c<\/strong><\/p>\n\n\n\n<p>\u6ce8\u610f\uff1a<strong>\u8be5\u6280\u5de7\u9002\u7528\u4e8e\u5355\u884c\u6587\u5b57\u5782\u76f4\u5c45\u4e2d\u6548\u679c<\/strong><\/p>\n\n\n\n<p><strong>5\u3001\u5b57\u4f53\u65cf<\/strong><\/p>\n\n\n\n<p>\u5c5e\u6027\u540d\uff1afont-family<\/p>\n\n\n\n<p>\u5c5e\u6027\u503c\uff1a\u5b57\u4f53\u540d<\/p>\n\n\n\n<p><code class=\"prettyprint\" >font-family: \u6977\u4f53;<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >font-family: Microsoft YaHei, Heiti SC, tahoma, arial, Hiragino Sans GB, &quot;\\5B8B\\4F53&quot;, sans-serif;<\/code><\/pre>\n\n\n\n<p>\u62d3\u5c55\uff08\u4e86\u89e3\uff09\uff1a<strong>font-family\u5c5e\u6027\u503c\u53ef\u4ee5\u4e66\u5199\u591a\u4e2a\u5b57\u4f53\u540d\uff0c\u5404\u4e2a\u5b57\u4f53\u540d\u7528\u9017\u53f7\u9694\u5f00\uff0c\u6267\u884c\u987a\u5e8f\u662f\u4ece\u5de6\u5411\u53f3\u4f9d\u6b21\u67e5\u627e<\/strong><\/p>\n\n\n\n<p>\u2022 font-family \u5c5e\u6027\u6700\u540e\u8bbe\u7f6e\u4e00\u4e2a\u5b57\u4f53\u65cf\u540d\uff0c\u7f51\u9875\u5f00\u53d1\u5efa\u8bae\u4f7f\u7528\u65e0\u886c\u7ebf\u5b57\u4f53<\/p>\n\n\n\n<p><strong>6\u3001font \u590d\u5408\u5c5e\u6027<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >div {\n\/* \u6587\u5b57\u503e\u659c *\/\nfont-style: italic;\n\/* \u6587\u5b57\u52a0\u7c97 *\/\nfont-weight: 700;\n\/* \u5b57\u4f53\u5927\u5c0f\u662f30px *\/\nfont-size: 30px;\n\/* \u884c\u9ad8\u4e3a\u5b57\u53f7\u76842\u500d *\/\nline-height: 2;\n\/* \u5b57\u4f53\u662f\u6977\u4f53 *\/\nfont-family: \u6977\u4f53;\n}<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >div {\n\/* font: \u662f\u5426\u503e\u659c \u662f\u5426\u52a0\u7c97 \u5b57\u53f7\/\u884c\u9ad8 \u5b57\u4f53; *\/\nfont: italic 700 30px\/2 \u6977\u4f53;\n}<\/code><\/pre>\n\n\n\n<p>\u590d\u5408\u5c5e\u6027\uff1a<strong>\u5c5e\u6027\u7684\u7b80\u5199\u65b9\u5f0f\uff0c\u4e00\u4e2a\u5c5e\u6027\u5bf9\u5e94\u591a\u4e2a\u503c\u7684\u5199\u6cd5\uff0c\u5404\u4e2a\u5c5e\u6027\u503c\u4e4b\u95f4\u7528\u7a7a\u683c\u9694\u5f00\u3002<\/strong><\/p>\n\n\n\n<p><code class=\"prettyprint\" >font: \u662f\u5426\u503e\u659c \u662f\u5426\u52a0\u7c97 \u5b57\u53f7\/\u884c\u9ad8 \u5b57\u4f53\uff08\u5fc5\u987b\u6309\u987a\u5e8f\u4e66\u5199\uff09<\/code><\/p>\n\n\n\n<p>\u6ce8\u610f\uff1a<strong>\u5b57\u53f7\u548c\u5b57\u4f53\u503c\u5fc5\u987b\u4e66\u5199<\/strong>\uff0c\u5426\u5219 font \u5c5e\u6027\u4e0d\u751f\u6548<\/p>\n\n\n\n<p><strong>7\u3001\u6587\u672c\u7f29\u8fdb<\/strong><\/p>\n\n\n\n<p>\u5c5e\u6027\u540d\uff1atext-indent<\/p>\n\n\n\n<p>\u5c5e\u6027\u503c\uff1a<\/p>\n\n\n\n<p>\u2022 \u6570\u5b57 + px<\/p>\n\n\n\n<p>\u2022 \u6570\u5b57 + em\uff08\u63a8\u8350\uff1a1em = \u5f53\u524d\u6807\u7b7e\u7684\u5b57\u53f7\u5927\u5c0f\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >p {\n\ntext-indent: 2em;\n\n}<\/code><\/pre>\n\n\n\n<p><strong>8\u3001\u6587\u672c\u5bf9\u9f50\u65b9\u5f0f<\/strong><\/p>\n\n\n\n<p>\u4f5c\u7528\uff1a\u63a7\u5236\u5185\u5bb9\u6c34\u5e73\u5bf9\u9f50\u65b9\u5f0f<\/p>\n\n\n\n<p>\u5c5e\u6027\u540d\uff1atext-align<\/p>\n\n\n\n<p>\u5c5e\u6027\u503c<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"565\" height=\"344\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-88.png\" alt=\"\" class=\"wp-image-2118\" style=\"width:274px;height:auto\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-88.png 565w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-88-300x183.png 300w\" sizes=\"(max-width: 565px) 100vw, 565px\" \/><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >text-align: center;<\/code><\/pre>\n\n\n\n<p>text-align\u672c\u8d28\u662f\u63a7\u5236\u5185\u5bb9\u7684\u5bf9\u9f50\u65b9\u5f0f\uff0c<strong>\u5c5e\u6027\u8981\u8bbe\u7f6e\u7ed9\u5185\u5bb9\u7684\u7236\u7ea7<\/strong>\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>9\u3001\u6587\u672c\u4fee\u9970\u7ebf<\/strong><\/p>\n\n\n\n<p>\u5c5e\u6027\u540d\uff1a text-decoration<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"627\" height=\"371\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-89.png\" alt=\"\" class=\"wp-image-2119\" style=\"width:392px;height:auto\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-89.png 627w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-89-300x178.png 300w\" sizes=\"(max-width: 627px) 100vw, 627px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"770\" height=\"560\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-90.png\" alt=\"\" class=\"wp-image-2120\" style=\"width:538px;height:auto\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-90.png 770w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-90-300x218.png 300w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-90-768x559.png 768w\" sizes=\"(max-width: 770px) 100vw, 770px\" \/><\/figure>\n\n\n\n<p><strong>10\u3001color \u6587\u5b57\u989c\u8272<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"199\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-91-1024x199.png\" alt=\"\" class=\"wp-image-2121\" style=\"width:869px;height:auto\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-91-1024x199.png 1024w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-91-300x58.png 300w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-91-768x149.png 768w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-91-1536x298.png 1536w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/03\/image-91.png 2024w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u63d0\u793a\uff1a\u53ea\u8981\u5c5e\u6027\u503c\u4e3a\u989c\u8272\uff0c\u90fd\u53ef\u4ee5\u4f7f\u7528\u4e0a\u8ff0\u56db\u79cd\u989c\u8272\u8868\u793a\u65b9\u5f0f\uff0c\u4f8b\u5982\uff1a\u80cc\u666f\u8272<\/p>\n\n\n\n<p><a href=\"https:\/\/blog.csdn.net\/weixin_45986031\/article\/details\/113065589\">\u7406\u89e3CSS\u989c\u8272\u7684\u56db\u79cd\u8868\u793a\u65b9\u5f0f-CSDN\u535a\u5ba2<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc-6\">1.6 \u8c03\u8bd5\u5de5\u5177<\/h2>\n\n\n\n<p>\u4f5c\u7528\uff1a\u68c0\u67e5\u3001\u8c03\u8bd5\u4ee3\u7801\uff1b\u5e2e\u52a9\u7a0b\u5e8f\u5458\u53d1\u73b0\u4ee3\u7801\u95ee\u9898\u3001\u89e3\u51b3\u95ee\u9898<\/p>\n\n\n\n<p><strong>1. \u6253\u5f00\u8c03\u8bd5\u5de5\u5177<\/strong><\/p>\n\n\n\n<p><code class=\"prettyprint\" >\u6d4f\u89c8\u5668\u7a97\u53e3\u5185\u4efb\u610f\u4f4d\u7f6e \/ \u9009\u4e2d\u6807\u7b7e \u2192 \u9f20\u6807\u53f3\u952e \u2192 \u68c0\u67e5<\/code><\/p>\n\n\n\n<p><code class=\"prettyprint\" >F12<\/code><\/p>\n\n\n\n<p><strong>2. \u4f7f\u7528\u8c03\u8bd5\u5de5\u5177<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"613\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-1024x613.png\" alt=\"\" class=\"wp-image-2147\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-1024x613.png 1024w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-300x180.png 300w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-768x460.png 768w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-1536x920.png 1536w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image.png 1745w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"294\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-1-1024x294.png\" alt=\"\" class=\"wp-image-2148\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-1-1024x294.png 1024w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-1-300x86.png 300w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-1-768x221.png 768w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-1-1536x442.png 1536w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-1.png 1558w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"492\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-2-1024x492.png\" alt=\"\" class=\"wp-image-2150\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-2-1024x492.png 1024w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-2-300x144.png 300w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-2-768x369.png 768w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-2-1536x738.png 1536w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-2-2048x984.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"460\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-3-1024x460.png\" alt=\"\" class=\"wp-image-2151\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-3-1024x460.png 1024w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-3-300x135.png 300w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-3-768x345.png 768w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-3-1536x690.png 1536w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-3-2048x919.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc-7\">CSS \u7b2c\u4e8c\u5929<\/h2>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc-8\">2.1 \u590d\u5408\u9009\u62e9\u5668<\/h2>\n\n\n\n<p>\u590d\u5408\u9009\u62e9\u5668\u5c31\u662f\u5c06\u57fa\u7840\u9009\u62e9\u5668\u8fdb\u884c\u91cd\u65b0\u7ec4\u5408\uff0c\u8fbe\u5230\u66f4\u65b9\u4fbf\u7684\u7528\u6cd5\uff0c\u66f4\u7cbe\u51c6\u5f97\u627e\u5230\u6211\u4eec\u7684\u6807\u7b7e<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>\u590d\u5408\u9009\u62e9\u5668<\/strong><\/p>\n\n\n\n<p><strong>\u5b9a\u4e49\uff1a<\/strong>\u7531\u4e24\u4e2a\u6216\u591a\u4e2a\u57fa\u7840\u9009\u62e9\u5668\uff0c\u901a\u8fc7\u4e0d\u540c\u7684\u65b9\u5f0f\u7ec4\u5408\u800c\u6210\u3002<\/p>\n\n\n\n<p><strong>\u4f5c\u7528\uff1a<\/strong>\u66f4\u51c6\u786e\u3001\u66f4\u9ad8\u6548\u7684\u9009\u62e9\u76ee\u6807\u5143\u7d20\uff08\u6807\u7b7e\uff09\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>\u540e\u4ee3\u9009\u62e9\u5668<\/strong><\/p>\n\n\n\n<p><strong>\u540e\u4ee3\u9009\u62e9\u5668\uff1a<\/strong>\u9009\u4e2d\u67d0\u5143\u7d20\u7684\u540e\u4ee3\u5143\u7d20\u3002<\/p>\n\n\n\n<p><strong>\u9009\u62e9\u5668\u5199\u6cd5\uff1a<\/strong><code class=\"prettyprint\" >\u7236\u9009\u62e9\u5668 \u5b50\u9009\u62e9\u5668 { CSS \u5c5e\u6027}<\/code>\uff0c\u7236\u5b50\u9009\u62e9\u5668\u4e4b\u95f4\u7528\u7a7a\u683c\u9694\u5f00\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >&lt;style&gt;\ndiv span {\ncolor: red;\n}\n&lt;\/style&gt;\n&lt;span&gt; span \u6807\u7b7e&lt;\/span&gt;\n&lt;div&gt;\n&lt;span&gt;\u8fd9\u662f div \u7684\u513f\u5b50 span&lt;\/span &gt;\n&lt;\/div&gt;<\/code><\/pre>\n\n\n\n<p><strong>\u5b50\u4ee3\u9009\u62e9\u5668<\/strong><\/p>\n\n\n\n<p><strong>\u5b50\u4ee3\u9009\u62e9\u5668\uff1a<\/strong>\u9009\u4e2d\u67d0\u5143\u7d20\u7684\u5b50\u4ee3\u5143\u7d20\uff08\u6700\u8fd1\u7684\u5b50\u7ea7\uff09\u3002<\/p>\n\n\n\n<p><strong>\u9009\u62e9\u5668\u5199\u6cd5\uff1a<\/strong><code class=\"prettyprint\" >\u7236\u9009\u62e9\u5668 &gt; \u5b50\u9009\u62e9\u5668 { CSS \u5c5e\u6027}<\/code>\uff0c\u7236\u5b50\u9009\u62e9\u5668\u4e4b\u95f4\u7528 &gt; \u9694\u5f00\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >&lt;style&gt;\ndiv &gt; span {\ncolor: red;\n}\n&lt;\/style&gt;<\/code><\/pre>\n\n\n\n<p><strong>\u5e76\u96c6\u9009\u62e9\u5668<\/strong><\/p>\n\n\n\n<p><strong>\u5e76\u96c6\u9009\u62e9\u5668\uff1a<\/strong>\u9009\u4e2d\u591a\u7ec4\u6807\u7b7e\u8bbe\u7f6e\u76f8\u540c\u7684\u6837\u5f0f\u3002<\/p>\n\n\n\n<p><strong>\u9009\u62e9\u5668\u5199\u6cd5\uff1a<\/strong><code class=\"prettyprint\" >\u9009\u62e9\u56681, \u9009\u62e9\u56682, \u2026, \u9009\u62e9\u5668N { CSS \u5c5e\u6027}<\/code>\uff0c\u9009\u62e9\u5668\u4e4b\u95f4\u7528 <strong>, <\/strong>\u9694\u5f00\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >&lt;style&gt;\ndiv,\np,\nspan {\ncolor: red;\n}\n&lt;\/style&gt;\n&lt;div&gt; div \u6807\u7b7e&lt;\/div&gt;\n&lt;p&gt;p \u6807\u7b7e&lt;\/p&gt;\n&lt;span&gt;span \u6807\u7b7e&lt;\/span&gt;<\/code><\/pre>\n\n\n\n<p><strong>\u4f2a\u7c7b\u9009\u62e9\u5668<\/strong><\/p>\n\n\n\n<p><strong>\u4f2a\u7c7b\u9009\u62e9\u5668\uff1a<\/strong>\u4f2a\u7c7b\u8868\u793a\u5143\u7d20\u72b6\u6001\uff0c\u9009\u4e2d\u5143\u7d20\u7684\u67d0\u4e2a\u72b6\u6001\u8bbe\u7f6e\u6837\u5f0f\u3002<\/p>\n\n\n\n<p><strong>\u9f20\u6807\u60ac\u505c\u72b6\u6001\uff1a<\/strong>\u9009\u62e9\u5668:hover { CSS \u5c5e\u6027 }<\/p>\n\n\n\n<p>\u4f8b\uff1a<a href=\"https:\/\/news.sina.com.cn\/\">\u65b0\u95fb\u4e2d\u5fc3\u9996\u9875_\u65b0\u6d6a\u7f51<\/a><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >&lt;style&gt;\na:hover {\ncolor: red;\n}\n.box:hover {\ncolor: green;\n}\n&lt;\/style&gt;\n&lt;a href=&quot;#&quot;&gt;a \u6807\u7b7e&lt;\/a&gt;\n&lt;div class=&quot;box&quot;&gt;div \u6807\u7b7e&lt;\/div&gt;<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"552\" height=\"425\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-5.png\" alt=\"\" class=\"wp-image-2165\" style=\"width:222px;height:auto\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-5.png 552w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-5-300x231.png 300w\" sizes=\"(max-width: 552px) 100vw, 552px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc-9\">2.2 CSS\u7279\u6027<\/h2>\n\n\n\n<p>CSS\u7279\u6027\uff1a<strong>\u5316\u7b80\u4ee3\u7801<\/strong> \/ <strong>\u5b9a\u4f4d\u95ee\u9898<\/strong>\uff0c\u5e76<strong>\u89e3\u51b3\u95ee\u9898<\/strong><\/p>\n\n\n\n<p>\u2022 \u7ee7\u627f\u6027<\/p>\n\n\n\n<p>\u2022 \u5c42\u53e0\u6027<\/p>\n\n\n\n<p>\u2022 \u4f18\u5148\u7ea7<\/p>\n\n\n\n<p><strong>\u7ee7\u627f\u6027<\/strong><\/p>\n\n\n\n<p><strong>\u7ee7\u627f\u6027\uff1a\u5b50\u7ea7\u9ed8\u8ba4\u7ee7\u627f\u7236\u7ea7\u7684\u6587\u5b57\u63a7\u5236\u5c5e\u6027\u3002<\/strong><\/p>\n\n\n\n<p>\u6ce8\u610f\uff1a\u5982\u679c\u6807\u7b7e\u6709\u9ed8\u8ba4\u6587\u5b57\u6837\u5f0f\u4f1a\u7ee7\u627f\u5931\u8d25\u3002<\/p>\n\n\n\n<p>\u4f8b\u5982\uff1aa \u6807\u7b7e\u7684\u989c\u8272\u3001\u6807\u9898\u7684\u5b57\u4f53\u5927\u5c0f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"711\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-6-1024x711.png\" alt=\"\" class=\"wp-image-2166\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-6-1024x711.png 1024w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-6-300x208.png 300w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-6-768x533.png 768w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-6.png 1036w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>\u5c42\u53e0\u6027<\/strong><\/p>\n\n\n\n<p>\u7279\u70b9\uff1a<\/p>\n\n\n\n<p>\u2022 \u76f8\u540c\u7684\u5c5e\u6027\u4f1a\u8986\u76d6\uff1a<strong>\u540e\u9762\u7684<\/strong> CSS \u5c5e\u6027\u8986\u76d6\u524d\u9762\u7684 CSS \u5c5e\u6027<\/p>\n\n\n\n<p>\u2022 \u4e0d\u540c\u7684\u5c5e\u6027\u4f1a\u53e0\u52a0\uff1a<strong>\u4e0d\u540c\u7684<\/strong> CSS \u5c5e\u6027\u90fd<strong>\u751f\u6548<\/strong><\/p>\n\n\n\n<p>\u6ce8\u610f\uff1a\u9009\u62e9\u5668\u7c7b\u578b\u76f8\u540c\u5219\u9075\u5faa<strong>\u5c42\u53e0\u6027<\/strong>\uff0c\u5426\u5219\u6309\u9009\u62e9\u5668<strong>\u4f18\u5148\u7ea7<\/strong>\u5224\u65ad\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>\u4f18\u5148\u7ea7<\/strong><\/p>\n\n\n\n<p>\u4f18\u5148\u7ea7\uff1a\u4e5f\u53eb<strong>\u6743\u91cd<\/strong>\uff0c\u5f53\u4e00\u4e2a\u6807\u7b7e\u4f7f\u7528\u4e86\u591a\u79cd\u9009\u62e9\u5668\u65f6\uff0c\u57fa\u4e8e\u4e0d\u540c\u79cd\u7c7b\u7684\u9009\u62e9\u5668\u7684\u5339\u914d\u89c4\u5219\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"559\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-4-1024x559.png\" alt=\"\" class=\"wp-image-2156\" style=\"width:512px;height:auto\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-4-1024x559.png 1024w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-4-300x164.png 300w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-4-768x419.png 768w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-4-1536x839.png 1536w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-4.png 1558w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc-10\">2.3 Emmet\u8bed\u6cd5<\/h2>\n\n\n\n<p><strong>Emmet\u5199\u6cd5\uff1a<\/strong>\u4ee3\u7801\u7684\u7b80\u5199\u65b9\u5f0f\uff0c\u8f93\u5165<strong>\u7f29\u5199<\/strong> VS Code \u4f1a<strong>\u81ea\u52a8\u751f\u6210\u5bf9\u5e94\u7684\u4ee3\u7801<\/strong>\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"627\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-7-1024x627.png\" alt=\"\" class=\"wp-image-2169\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-7-1024x627.png 1024w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-7-300x184.png 300w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-7-768x471.png 768w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-7.png 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc-11\">2.4 \u80cc\u666f\u5c5e\u6027<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"765\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-9-1024x765.png\" alt=\"\" class=\"wp-image-2180\" style=\"width:624px;height:auto\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-9-1024x765.png 1024w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-9-300x224.png 300w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-9-768x574.png 768w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-9.png 1051w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>\u80cc\u666f\u56fe<\/strong><\/p>\n\n\n\n<p>\u7f51\u9875\u4e2d\uff0c\u4f7f\u7528\u80cc\u666f\u56fe<strong>\u5b9e\u73b0\u88c5\u9970\u6027<\/strong>\u7684\u56fe\u7247\u6548\u679c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"664\" height=\"162\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-14.png\" alt=\"\" class=\"wp-image-2191\" style=\"width:307px;height:auto\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-14.png 664w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-14-300x73.png 300w\" sizes=\"(max-width: 664px) 100vw, 664px\" \/><\/figure>\n\n\n\n<p>\u5c5e\u6027\u540d\uff1a<code class=\"prettyprint\" >background-image\uff08bgi\uff09<\/code><\/p>\n\n\n\n<p>\u5c5e\u6027\u503c\uff1aurl(\u80cc\u666f\u56fe URL)<\/p>\n\n\n\n<p>\u63d0\u793a\uff1a\u80cc\u666f\u56fe\u9ed8\u8ba4\u6709<strong>\u5e73\u94fa\uff08\u590d\u5236\uff09<\/strong>\u6548\u679c\u3002<\/p>\n\n\n\n<p><strong><em>\u8bfe\u5802\u4f5c\u4e1a\uff1a28<\/em><\/strong><\/p>\n\n\n\n<p><strong>\u80cc\u666f\u5e73\u94fa\u65b9\u5f0f<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"764\" height=\"451\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-11.png\" alt=\"\" class=\"wp-image-2182\" style=\"width:544px;height:auto\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-11.png 764w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-11-300x177.png 300w\" sizes=\"(max-width: 764px) 100vw, 764px\" \/><\/figure>\n\n\n\n<p><strong>\u80cc\u666f\u56fe\u4f4d\u7f6e<\/strong><\/p>\n\n\n\n<p>\u5c5e\u6027\u540d\uff1a<code class=\"prettyprint\" >background-position\uff08bgp\uff09<\/code><\/p>\n\n\n\n<p>\u5c5e\u6027\u503c\uff1a<strong>\u6c34\u5e73\u65b9\u5411\u4f4d\u7f6e \u5782\u76f4\u65b9\u5411\u4f4d\u7f6e<\/strong><\/p>\n\n\n\n<p>\u2022 \u5173\u952e\u5b57<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"680\" height=\"548\" src=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-13.png\" alt=\"\" class=\"wp-image-2185\" style=\"width:275px;height:auto\" srcset=\"http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-13.png 680w, http:\/\/ericw.top\/wp-content\/uploads\/2025\/04\/image-13-300x242.png 300w\" sizes=\"(max-width: 680px) 100vw, 680px\" \/><\/figure>\n\n\n\n<p>\u2022 \u5750\u6807\uff08\u6570\u5b57 + px\uff0c\u6b63\u8d1f\u90fd\u53ef\u4ee5\uff09<\/p>\n\n\n\n<p>\u6c34\u5e73\uff1a<strong>\u6b63\u6570\u5411\u53f3\uff1b\u8d1f\u6570\u5411\u5de6<\/strong><\/p>\n\n\n\n<p>\u5782\u76f4\uff1a<strong>\u6b63\u6570\u5411\u4e0b\uff1b\u8d1f\u6570\u5411\u4e0a<\/strong><\/p>\n\n\n\n<p>\u63d0\u793a\uff1a<\/p>\n\n\n\n<p>\u2022 <strong>\u5173\u952e\u5b57<\/strong>\u53d6\u503c\u65b9\u5f0f\u5199\u6cd5\uff0c\u53ef\u4ee5<strong>\u98a0\u5012\u53d6\u503c\u987a\u5e8f<\/strong><\/p>\n\n\n\n<p>\u2022 \u53ef\u4ee5<strong>\u53ea\u5199\u4e00\u4e2a\u5173\u952e\u5b57<\/strong>\uff0c<strong>\u53e6\u4e00\u4e2a\u65b9\u5411\u9ed8\u8ba4\u4e3a\u5c45\u4e2d<\/strong>\uff1b\u6570\u5b57\u53ea\u5199\u4e00\u4e2a\u503c\u8868\u793a\u6c34\u5e73\u65b9\u5411\uff0c\u5782\u76f4\u65b9\u5411\u4e3a\u5c45\u4e2d<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>\u80cc\u666f\u7f29\u653e<\/strong><\/p>\n\n\n\n<p>\u4f5c\u7528\uff1a\u8bbe\u7f6e\u80cc\u666f\u56fe\u5927\u5c0f<\/p>\n\n\n\n<p>\u5c5e\u6027\u540d\uff1a<code class=\"prettyprint\" >background-size\uff08bgz\uff09<\/code><\/p>\n\n\n\n<p>\u5e38\u7528\u5c5e\u6027\u503c\uff1a<\/p>\n\n\n\n<p>\u2022 \u5173\u952e\u5b57<\/p>\n\n\n\n<p>cover\uff1a<strong>\u7b49\u6bd4\u4f8b\u7f29\u653e\u80cc\u666f\u56fe\u7247\u4ee5\u5b8c\u5168\u8986\u76d6\u80cc\u666f\u533a<\/strong>\uff0c\u53ef\u80fd\u80cc\u666f\u56fe\u7247<strong>\u90e8\u5206\u770b\u4e0d\u89c1<\/strong><\/p>\n\n\n\n<p>contain\uff1a<strong>\u7b49\u6bd4\u4f8b\u7f29\u653e\u80cc\u666f\u56fe\u7247\u4ee5\u5b8c\u5168\u88c5\u5165\u80cc\u666f\u533a<\/strong>\uff0c\u53ef\u80fd\u80cc\u666f\u533a<strong>\u90e8\u5206\u7a7a\u767d<\/strong><\/p>\n\n\n\n<p>\u2022 \u767e\u5206\u6bd4\uff1a<strong>\u6839\u636e\u76d2\u5b50\u5c3a\u5bf8\u8ba1\u7b97\u56fe\u7247\u5927\u5c0f<\/strong><\/p>\n\n\n\n<p>\u2022 \u6570\u5b57 + \u5355\u4f4d\uff08\u4f8b\u5982\uff1apx\uff09<\/p>\n\n\n\n<p>\u63d0\u793a\uff1a\u5de5\u4f5c\u4e2d\uff0c\u56fe\u7247\u6bd4\u4f8b\u4e0e\u76d2\u5b50\u6bd4\u4f8b\u76f8\u540c\uff0c\u4f7f\u7528 cover \u6216 contain \u7f29\u653e\u80cc\u666f\u56fe\u6548\u679c\u76f8\u540c\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>\u80cc\u666f\u56fa\u5b9a<\/strong><\/p>\n\n\n\n<p>\u4f5c\u7528\uff1a<strong>\u80cc\u666f\u4e0d\u4f1a\u968f\u7740\u5143\u7d20\u7684\u5185\u5bb9\u6eda\u52a8<\/strong>\uff0c\u4e00\u822c\u662f\u7528\u5728\u7f51\u9875\u80cc\u666f\u5927\u56fe\u4f4d\u7f6e<\/p>\n\n\n\n<p><a href=\"https:\/\/im.qq.com\/pcqq\/index.shtml\">QQ Windows\u7248-\u8f7b\u677e\u505a\u81ea\u5df1<\/a><\/p>\n\n\n\n<p>\u5c5e\u6027\u540d\uff1a<code class=\"prettyprint\" >background-attachment\uff08bga\uff09<\/code><\/p>\n\n\n\n<p>\u5c5e\u6027\u503c\uff1a<code class=\"prettyprint\" >fixed<\/code><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc-12\">2.5 \u80cc\u666f\u590d\u5408\u5c5e\u6027<\/h2>\n\n\n\n<p>\u5c5e\u6027\u540d\uff1a<code class=\"prettyprint\" >background\uff08bg\uff09<\/code><\/p>\n\n\n\n<p>\u5c5e\u6027\u503c\uff1a<strong>\u80cc\u666f\u8272 \u80cc\u666f\u56fe 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