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CSS3’s new :not() pseudo-class selector matches elements that do not contain selectors. Suppose there is a list. Each list item has a bottom line, but the last item does not need a bottom line. The case is as follows:
<!DOCTYPE> <html> <head> <meta charset="utf-8" /> <title>使用:not() 最后一行li不添加边框</title> <style type="text/css"> /* 使字体在所有设备上都达到最佳的显示 */ html { -moz-osx-font-smoothing: grayscale; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; } /* 给body添加阴影 */ body:before { content: ""; position: fixed; top: -10px; left: 0; width: 100%; height: 10px; -webkit-box-shadow: 0px 0px 10px rgba(0,0,0,.8); -moz-box-shadow: 0px 0px 10px rgba(0,0,0,.8); box-shadow: 0px 0px 10px rgba(0,0,0,.8); z-index: 100; } /* 设置列表 */ .listItem { border: 1px solid red; } .listItem ul { width: 100%; overflow:hidden; } .listItem ul,listItem li { margin:0; padding:0; list-style:none; } .listItem li { margin-left:10px; } /* li 最后一个元素不添加边框 */ .listItem li:not(:last-child) { border-bottom:1px solid green; } /* 与第一个li相连兄弟 */ .listItem li:first-child ~ li { border-left: 1px solid #666; } </style> </head> <body> <p class="listItem"> <ul> <li>列表1</li> <li>列表2</li> <li>列表3</li> <li>列表4</li> <li>列表5</li> </ul> </p> </body> </html>
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