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- CSDN专家-天际的海浪 2021-04-07 17:34关注
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" /> <title> 页面名称 </title> <style type="text/css"> .test { width: 100px; height: 50px; background-color: #00f; margin: 0px 25px; position: relative; } .test:before { content: ""; display: block; position: absolute; width: 0px; height: 0px; top: 0; left: -25px; border: 25px solid transparent; border-top-color: #00f; border-bottom-color: #00f; } .test:after { content: ""; display: block; position: absolute; width: 0px; height: 0px; top: 0; left: 100%; border: 25px solid transparent; border-left-color: #00f; } </style> </head> <body> <div class="test"></div> </body> </html>
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