[前端]背景上升效果,html+css

给我一个渐变的效果

鼠标移入能看到效果

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
    <title></title>
    <style type="text/css">
    .d1{width: 200px;
        height: 200px;
        background: green;
        position: relative;
        overflow: hidden;

        }    
        .d2{width: 200px;
        height: 200px;
        z-index: 1;
        position: absolute;
        }
.d2:before{content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    top: 100%;
    background: red;
    z-index: -2;
    transition: all 0.5S linear;}
.d2:hover:before{top: 0%}
    </style>

</head>
<body>
<div class="d1">
    <div class="d2">给我一个渐变的效果</div>
</div>
</body>
</html>

 

posted @ 2016-09-22 07:59  啊啦  阅读(567)  评论(0)  编辑  收藏  举报