边框的应用（小三角） 

<!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">
    <title>Document</title>
    <style>
        /* 盒模型总宽  = 200+ 200+200
        transparent  取底色
         */
    .box {
        width: 0px;
        height: 0px;
        /* background-color: red; */
        border-top:200px solid transparent;
        border-left:200px solid transparent;
        border-right:200px solid deeppink;
        border-bottom:200px solid transparent;
    }
    
    </style>
</head>
<body>
    <!-- 三角形   箭头 -->

    <div class="box"></div>
</body>
</html>

 

posted @ 2020-02-03 11:15  给与时间以生命  阅读(84)  评论(0)    收藏  举报