滑动门功能

    .all{
             100px;
            height: 60px;
            background: red url("images/border/nav-center.jpg") repeat-x;
            //图片为宽度为1px
            margin: 200px auto;
        }
        .left{
             100%;
            height: 100%;
            background: url("images/border/nav-left.jpg") no-repeat;
        }
        .right{
             100%;
            height: 100%;
            background: url("images/border/nav-right.jpg") center right no-repeat;
　　　　　　　//背景定位
        }

<div class="all">
    <div class="left">
        <div class="right"></div>
    </div>
</div>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>125-边框图片按钮</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        div{
             100px;
            height: 60px;
            border: 20px solid #000;
            box-sizing: border-box;
            border-image: url("images/border/nav-all.jpg") 20 fill repeat;
            margin: 200px auto;
        }
    </style>
</head>
<body>
<div></div>
</body>
</html>