{"id":8540,"date":"2019-03-11T22:44:41","date_gmt":"2019-03-11T14:44:41","guid":{"rendered":"https:\/\/www.zhangxinxu.com\/wordpress\/?p=8540"},"modified":"2022-04-27T22:41:21","modified_gmt":"2022-04-27T14:41:21","slug":"nth-last-child-css-layout","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2019\/03\/nth-last-child-css-layout\/","title":{"rendered":"\u4f2a\u7c7b\u5339\u914d\u5217\u8868\u6570\u76ee\u5b9e\u73b0\u5fae\u4fe1\u7fa4\u5934\u50cfCSS\u5e03\u5c40\u7684\u6280\u5de7"},"content":{"rendered":"<p>by <a href=\"https:\/\/www.zhangxinxu.com\/\">zhangxinxu<\/a> from <a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=8540\">https:\/\/www.zhangxinxu.com\/wordpress\/?p=8540<\/a><br \/>\n\u672c\u6587\u53ef\u5168\u6587\u8f6c\u8f7d\uff0c\u4e2a\u4eba\u7f51\u7ad9\u65e0\u9700\u6388\u6743\uff0c\u53ea\u8981\u4fdd\u7559\u539f\u4f5c\u8005\u3001\u51fa\u5904\u4ee5\u53ca\u6587\u4e2d\u94fe\u63a5\u5373\u53ef\uff0c\u4efb\u4f55\u7f51\u7ad9\u5747\u53ef\u6458\u8981\u805a\u5408\uff0c\u5546\u7528\u8bf7\u8054\u7cfb\u6388\u6743\u3002<br \/>\n<script>window.wxShareImgUrl = 'https:\/\/www.zhangxinxu.com\/study\/image\/share\/201903-group-avatar.jpg';<\/script><\/p>\n<h3>\u4e00\u3001\u4e0d\u540c\u5217\u8868\u6570\u91cf\u4e0d\u540c\u5e03\u5c40<\/h3>\n<p>\u8fd9\u662f\u7fa4\u91cc\u6709\u4eba\u95ee\u7684\u4e00\u4e2a\u95ee\u9898\uff0c\u53ef\u80fd\u5176\u4ed6\u4eba\u4e5f\u6709\u7c7b\u4f3c\u9700\u6c42\uff0c\u56e0\u6b64\u62ff\u51fa\u6765\u7ed9\u5927\u5bb6\u5206\u4eab\u5206\u4eab\u3002<\/p>\n<p>\u804a\u5929\u8f6f\u4ef6\u4e2d\u7684\u7fa4\u5934\u50cf\uff0c\u6216\u8005\u4e00\u4e9b\u4e66\u7c4d\u7684\u5206\u7ec4\uff0c\u5f80\u5f80\u91c7\u7528\u590d\u5408\u5934\u50cf\u4f5c\u4e3a\u4e00\u4e2a\u5927\u7684\u5934\u50cf\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201903\/2019-03-11_203856.png\" width=\"475\" height=\"117\" alt=\"\u590d\u5408\u5934\u50cf\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u5934\u50cf\u6570\u76ee\u4e0d\u540c\uff0c\u5e03\u5c40\u4e5f\u8ddf\u7740\u4e0d\u540c\u3002<\/p>\n<p><strong>\u66f4\u65b0\u4e8e2022\u5e7404-27<\/strong><\/p>\n<p>\u6709\u4e86 Flex \u5e03\u5c40\uff0c\u4ee3\u7801\u53ef\u4ee5\u7b80\u5355 N \u500d\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>&lt;div class=\"avatar\"&gt;\r\n    &lt;!-- 1-9\u4e2a img \u5143\u7d20 --&gt;\r\n    &lt;img src=\"1.png\"&gt;\r\n&lt;\/div&gt;<\/pre>\n<pre>img {\r\n    outline: 1px solid;\r\n    outline-offset: -1px;\r\n    flex: none;\r\n    width: 50%;\r\n}\r\nimg:only-child {\r\n    width: 100%;\r\n}\r\nimg:first-child:nth-last-child(n+5),\r\nimg:first-child:nth-last-child(n+5) ~ img {\r\n    width: calc(100% \/ 3);\r\n}\r\n.avatar {\r\n    display: flex;\r\n    align-content: center;\r\n    flex-wrap: wrap-reverse;\r\n    justify-content: center;\r\n    width: 300px; height: 300px;\r\n    border: 1px solid #ddd;\r\n    border-radius: 4px;\r\n}<\/pre>\n<p>\u6709demo\uff0c\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/202204\/avatar.html\" rel=\"noopener\" target=\"_blank\">Flex\u5e03\u5c40\u4e0b\u7684\u7fa4\u5934\u50cf\u5e03\u5c40\u6548\u679cdemo<\/a><\/p>\n<h4>\u5e38\u89c4\u64cd\u4f5c<\/h4>\n<p>\u4e00\u822c\u5927\u5bb6\u4f1a\u5b9e\u73b0\u7c7b\u4f3c\u4e0b\u9762\u7684\u65b9\u6cd5\u5b9e\u73b0\u5e03\u5c40\u6548\u679c\uff1a<\/p>\n<pre>&lt;ul class=\"box\" data-number=\"1\"&gt;&lt;\/ul&gt;\r\n&lt;ul class=\"box\" data-number=\"2\"&gt;&lt;\/ul&gt;\r\n&lt;ul class=\"box\" data-number=\"3\"&gt;&lt;\/ul&gt;\r\n\u2026\r\n<\/pre>\n<pre>.box[data-number=\"1\"] li {}\r\n.box[data-number=\"2\"] li {}\r\n.box[data-number=\"3\"] li {}\r\n<\/pre>\n<p>\u662f\u4e2a\u4e0d\u9519\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5f88\u597d\u5730\u6ee1\u8db3\u6211\u4eec\u7684\u5f00\u53d1\u9700\u6c42\uff0c\u552f\u4e00\u7684\u4e0d\u8db3\u5c31\u662f\u5f53\u5b50\u5934\u50cf\u6570\u91cf\u53d8\u5316\u65f6\u5019\uff0c\u9700\u8981\u540c\u65f6\u4fee\u6539<code>data-number<\/code>\u7684\u5c5e\u6027\u503c\uff0c\u5f00\u53d1\u6210\u672c\u5fae\u5fae\u9ebb\u70e6\u4e86\u70b9\u3002<\/p>\n<p>\u5b9e\u9645\u4e0a\uff0c\u8fd8\u6709\u66f4\u5de7\u5999\u7684\u5b9e\u73b0\u65b9\u6cd5\uff0c\u5c31\u662f\u501f\u52a9\u4f2a\u7c7b\uff0c\u81ea\u52a8\u5224\u65ad\u6211\u4eec\u5217\u8868\u9879\u7684\u4e2a\u6570\uff0c\u4ece\u800c\u5b9e\u73b0\u6211\u4eec\u60f3\u8981\u7684\u5e03\u5c40\u3002<\/p>\n<h3>\u4e8c\u3001\u4f60\u53ef\u80fd\u4e0d\u77e5\u9053\u7684\u4f2a\u7c7b\u5b9e\u73b0\u6280\u5de7<\/h3>\n<p>\u5728\u8fd9\u4e2a\u65b9\u6cd5\u4e2d\uff0c\u4f60\u4e0d\u9700\u8981\u5728\u7236\u5143\u7d20\u4e0a\u8bbe\u7f6e\u5f53\u524d\u5217\u8868\u7684\u4e2a\u6570\uff0c\u56e0\u6b64\uff0cHTML\u770b\u8d77\u6765\u5e73\u5e73\u65e0\u5947\uff1a<\/p>\n<pre>&lt;ul class=\"box\"&gt;\r\n  &lt;li&gt;&lt;\/li&gt;\r\n  &lt;li&gt;&lt;\/li&gt;\r\n  &lt;li&gt;&lt;\/li&gt;\r\n  \u2026\r\n&lt;\/ul&gt;\r\n<\/pre>\n<p>\u5173\u952e\u5c31\u5728\u4e8eCSS\uff0c\u6211\u4eec\u53ef\u4ee5\u501f\u52a9\u4f2a\u7c7b\u5224\u65ad\u5f53\u524d\u5217\u8868\u4e2a\u6570\uff0c\u793a\u610f\u5982\u4e0b\uff1a<\/p>\n<pre>li:only-child { <span style=\"color:green;\">\/* 1\u4e2a *\/<\/span> }<\/pre>\n<pre>li:first-child:nth-last-child(2) { <span style=\"color:green;\">\/* 2\u4e2a *\/<\/span> }\r\nli:first-child:nth-last-child(3) { <span style=\"color:green;\">\/* 3\u4e2a *\/<\/span> }\r\n\u2026\r\n<\/pre>\n<p>\u5728CSS\u4e2d\uff0c\u4f2a\u7c7b\u662f\u53ef\u4ee5\u7ea7\u8054\u4f7f\u7528\u7684\uff0c\u4e8e\u662f\uff0c\u5982\u679c\u5217\u8868\u53ef\u4ee5\u5339\u914d<code>:first-child:nth-last-child(2)<\/code>\u5219\u8868\u793a\u5f53\u524d<code>&lt;li&gt;<\/code>\u5143\u7d20\u5373\u662f\u7b2c1\u4e2a\u5b50\u5143\u7d20\uff0c\u53c8\u662f\u4ece\u540e\u5f80\u524d\u7b2c2\u4e2a\u5b50\u5143\u7d20\uff0c\u56e0\u6b64\uff0c\u6211\u4eec\u5c31\u80fd\u5224\u65ad\u5f53\u524d\u603b\u5171\u4e24\u4e2a<code>&lt;li&gt;<\/code>\u5b50\u5143\u7d20\uff0c\u6211\u4eec\u5c31\u80fd\u7cbe\u51c6\u5b9e\u73b0\u6211\u4eec\u60f3\u8981\u7684\u5e03\u5c40\u4e86\uff0c\u53ea\u9700\u8981\u914d\u5408\u76f8\u90bb\u5144\u5f1f\u9009\u62e9\u7b26\u52a0\u53f7<code>+<\/code>\u4ee5\u53ca\u5144\u5f1f\u9009\u62e9\u7b26\u5f2f\u5f2f<code>~<\/code>\u5373\u53ef\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre><span style=\"color:green;\">\/* 3\u4e2ali\u9879\u76ee\u7684\u7b2c1\u4e2a\u5217\u8868\u9879 *\/<\/span>\r\nli:first-child:nth-last-child(3) {}\r\n<span style=\"color:green;\">\/* 3\u4e2ali\u9879\u76ee\u7684\u7b2c1\u4e2a\u5217\u8868\u9879\u7684\u540e\u4e00\u4e2a\uff0c\u4e5f\u5c31\u662f\u7b2c2\u9879\u7684\u6837\u5f0f *\/<\/span>\r\nli:first-child:nth-last-child(3) + li {}\r\n<span style=\"color:green;\">\/* 3\u4e2ali\u9879\u76ee\u7684\u7b2c\u4e00\u4e2a\u5217\u8868\u9879\u540e\u9762\u4e24\u4e2a\u5217\u8868\u9879\uff0c\u4e5f\u5c31\u662f\u7b2c2\u9879\u548c\u7b2c3\u9879\u7684\u6837\u5f0f *\/<\/span>\r\nli:first-child:nth-last-child(3) ~ li {}\r\n<\/pre>\n<p>\u773c\u89c1\u4e3a\u5b9e\uff0c\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/201903\/css-nth-last-child-group-avatar-demo.php\" rel=\"noopener\" target=\"_blank\">\u7eafCSS\u81ea\u52a8\u8bc6\u522b\u4e0d\u540c\u5217\u8868\u4e2a\u6570\u4e0d\u540c\u5e03\u5c40demo<\/a><\/p>\n<p>\u4f8b\u5982\u5982\u679c\u5c312\u4e2a<code>&lt;li&gt;<\/code>\uff1a<\/p>\n<pre>&lt;ul&gt;\r\n  &lt;li&gt;&lt;\/li&gt;\r\n  &lt;li&gt;&lt;\/li&gt;\r\n&lt;\/ul&gt;\r\n<\/pre>\n<p>\u5219\u6548\u679c\u5982\u4e0b\u56fe\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201903\/2019-03-11_210308.png\" width=\"241\" height=\"242\" alt=\"2\u4e2a\u5c0f\u5934\u50cf\u65f6\u5019\u7684\u5e03\u5c40\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u5982\u679c3\u4e2a<code>&lt;li&gt;<\/code>\uff1a<\/p>\n<pre>&lt;ul&gt;\r\n  &lt;li&gt;&lt;\/li&gt;\r\n  &lt;li&gt;&lt;\/li&gt;\r\n  &lt;li&gt;&lt;\/li&gt;\r\n&lt;\/ul&gt;\r\n<\/pre>\n<p>\u5219\u5e03\u5c40\u6548\u679c\u5982\u4e0b\u56fe\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201903\/2019-03-11_210330.png\" width=\"241\" height=\"240\" alt=\"3\u4e2a\u5c0f\u5934\u50cf\u65f6\u5019\u7684\u5e03\u5c40\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u5b8c\u65749\u4e2a\u5e03\u5c40\u6548\u679c\u5982\u4e0bMP4\u89c6\u9891\uff08\u4e0d\u52a8\u8bf7\u70b9\u51fb\uff09\uff1a<\/p>\n<p><video src=\"https:\/\/image.zhangxinxu.com\/video\/blog\/201903\/group-avatar.mp4\" type=\"video\/mp4\" width=\"250\" height=\"288\" preload=\"auto\" autoplay autobuffer loop x-webkit-airplay=\"allow\" x5-video-player-type=\"h5\" x5-video-player-fullscreen=\"true\" x5-video-orientation=\"portraint\" webkit-playsinline=\"true\" playsinline=\"true\" \u200b\u200b\u200b\u200bposter=\"\/\/image.zhangxinxu.com\/image\/blog\/201806\/poster.png\"><\/video><\/p>\n<h3>\u4e09\u3001\u5ef6\u4f38\u4e0e\u62d3\u5c55\uff1a\u6587\u5b57\u591a\u5b57\u53f7\u81ea\u52a8\u53d8\u5c0f<\/h3>\n<p>\u548c\u4e0a\u9762\u7c7b\u4f3c\u7684\u539f\u7406\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9e\u73b0\u6587\u5b57\u5185\u5bb9\u591a\uff0c\u5b57\u53f7\u81ea\u52a8\u53d8\u5c0f\u7684\u6548\u679c\uff0c\u4e0d\u8fc7\u6211\u4eec\u9700\u8981\u628a\u6240\u6709\u7684\u5b57\u7b26\u4f7f\u7528\u4e00\u4e2a\u6807\u7b7e\u5305\u88f9\u8d77\u6765\uff0c\u5269\u4e0b\u7684\u4e8b\u60c5\u5c31\u5168\u90e8\u4ea4\u7ed9CSS\u597d\u4e86\u3002<\/p>\n<p>\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/201903\/css-font-size-auto-demo.php\" rel=\"noopener\" target=\"_blank\">\u6587\u5b57\u7684font-size\u5927\u5c0f\u6839\u636e\u4e2a\u6570\u4e0d\u540c\u81ea\u52a8\u53d8\u5316demo<\/a><\/p>\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u5f53\u6587\u5b57\u6570\u91cf\u4e0d\u540c\u7684\u65f6\u5019\uff0c\u5b57\u53f7\u5927\u5c0f\u4e5f\u8ddf\u7740\u53d8\u5316\uff0c\u5982\u4e0bGIF\u622a\u56fe\u793a\u610f\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201903\/font-size-auto.gif\" width=\"282\" height=\"273\" alt=\"\u6587\u5b57\u4e2a\u6570\u591a\u5b57\u53f7\u81ea\u52a8\u53d8\u5c0f\u793a\u610f\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u6838\u5fc3CSS\u5982\u4e0b\uff1a<\/p>\n<pre>.box span {\r\n    font-size: 40px;    \r\n}\r\n.box span:first-child:nth-last-child(n+13),\r\n.box span:first-child:nth-last-child(n+13) ~ span {\r\n    font-size: 30px;    \r\n}\r\n.box span:first-child:nth-last-child(n+17),\r\n.box span:first-child:nth-last-child(n+17) ~ span {\r\n    font-size: 20px;    \r\n}\r\n.box span:first-child:nth-last-child(n+25),\r\n.box span:first-child:nth-last-child(n+25) ~ span {\r\n    font-size: 14px;    \r\n}<\/pre>\n<p>\u8868\u793a\u5b57\u7b26\u4e2a\u6570\u5927\u4e8e13\u4e2a\uff0c\u5927\u4e8e17\u4e2a\u4ee5\u53ca\u5927\u4e8e25\u4e2a\u65f6\u5019\u6837\u5f0f\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u914d\u5408\u201c<a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=5963\">\u8749\u539f\u5219<\/a>\u201d\uff0c\u6211\u4eec\u8fd8\u80fd\u5b9e\u73b0\u5217\u8868\u66f4\u52a0\u968f\u673a\u7684\u6837\u5f0f\u6548\u679c\uff08\u8868\u683c\u7684\u6591\u9a6c\u7ebf\u5c5e\u4e8e\u89c4\u5f8b\u63a7\u5236\uff0c\u5176\u5b9e\u53ef\u4ee5\u4f7f\u7528\u590d\u5408\u4f2a\u7c7b\u5b9e\u73b0\u968f\u673a\uff09\u3002\u8fd9\u4e2a\u4ee5\u540e\u6709\u673a\u4f1a\u518d\u5c55\u5f00\u3002<\/p>\n<p>\u629b\u7816\u5f15\u7389\uff0c\u672c\u6587\u7684\u8fd9\u79cd\u6280\u5de7\u975e\u5e38\u9002\u5408HTML\u65e0\u6cd5\u4fee\u6539\u7684\u573a\u5408\uff0c\u867d\u7136\u6709\u4e9b\u6781\u5ba2\uff0c\u4f46\u5173\u952e\u65f6\u5019\u8bf4\u4e0d\u5b9a\u5c31\u662f\u795e\u64cd\u4f5c\u4e86\u3002<\/p>\n<p>\u672c\u65b9\u6cd5IE9+\u90fd\u652f\u6301\uff0c\u653e\u5fc3\u4f7f\u7528\u3002<\/p>\n<p>\u611f\u8c22\u9605\u8bfb\uff0c\u6b22\u8fce\u4ea4\u6d41\uff01<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/emtion\/emoji\/1f618.svg\" width=\"20\" height=\"20\" align=\"absmiddle\"><\/p>\n<p>\u672c\u6587\u4e3a\u539f\u521b\u6587\u7ae0\uff0c\u4f1a\u7ecf\u5e38\u66f4\u65b0\u77e5\u8bc6\u70b9\u4ee5\u53ca\u4fee\u6b63\u4e00\u4e9b\u9519\u8bef\uff0c\u56e0\u6b64\u8f6c\u8f7d\u8bf7\u4fdd\u7559\u539f\u51fa\u5904\uff0c\u65b9\u4fbf\u6eaf\u6e90\uff0c\u907f\u514d\u9648\u65e7\u9519\u8bef\u77e5\u8bc6\u7684\u8bef\u5bfc\uff0c\u540c\u65f6\u6709\u66f4\u597d\u7684\u9605\u8bfb\u4f53\u9a8c\u3002<br \/>\n\u672c\u6587\u5730\u5740\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=8540\">https:\/\/www.zhangxinxu.com\/wordpress\/?p=8540<\/a><\/p>\n<p>\uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201903\/wx-avatar.png\" width=\"160\" height=\"102\" class=\"alignright size-medium\" 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