为什么不出现效果
来源：2-14 编程练习
小熊饼干seven
2017-08-27 12:29:01
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>2-4</title>
<style type="text/css">
div {
font-family: 'Microsoft Yahei';
font-size: 60px;
font-weight: bold;
line-height: 600px;
position: absolute;
top: -1000px;
right: 0;
left: 0;
width: 800px;
height: 600px;
margin: auto;
text-align: center;
border: 5px solid #000;
border-radius: 50%;
-webkit-animation-name: disp;
animation-name: disp;
-webkit-animation-duration: 1s;
animation-duration: 1s;
-webkit-animation-timing-function: linear;
animation-timing-function: linear;
-webkit-animation-delay:2s;
animation-delay:2s;
-webkit-animation-iteration-count:infinite;
animation-iteration-count:infinite;
}
@keyframes disp{
from{top:-1000;}
to{top:200;}
}
</style>
</head>
<body>
<div>大家好，欢迎来到慕课网！</div>
</body>
</html>
1回答
-
怎么都被占用了呢
2017-08-27
忘记加单位了哦
0
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