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  • 鼠标放上去,会出现延展的线 ,而且是渐变的

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Document</title>
        <style>
               .aaa {
                   100px;
                   height:60px;
                   line-height: 100px;
                   text-align: center;
                   color:red;
                   background-color: lightblue;
                   position: relative;
                   display:block;
               }
               .aaa:after {
                   content:"";
                   position:absolute;
                   3px;
                   height:3px;
                   left:0;
                   bottom:-42px;
                   z-index:8888;
                   transition:all 1s ease;
                   background-color: red;
                   background-color: transparent;
               }
               .aaa:hover:after {
                    100%;
                    background:#FCA311;
                    transition:all 1s ease;
               }
    
    
        </style>
    </head>
    <body>
        <a class="aaa" href="">654654654654</a>
    </body>
    </html>

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  • 原文地址:https://www.cnblogs.com/agansj/p/8388255.html
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