css 实现三角形 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
           #demo {
               width: 0;
               height: 0;
                border-width: 200px;
                border-style: solid;
                border-color: transparent transparent red transparent;
           }
            .d2{
                width:400px;
                height:200px;
                background-color: orange;
            }
    </style>
</head>
<body>
<div id="demo">

</div>
<div class="d2"> <img src="01_03.png" alt=""></div>
</body>
</html>
posted @ 2016-10-06 16:57  liwei742314100  阅读(128)  评论(0)  编辑  收藏  举报