老师帮帮看看代码~

来源：2-20 编程练习

我代码么问题

2021-07-31 20:29:41

<!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%;
animation: disp 1s ease 1s ;

}

@keyframes disp{
from{
transform:translate(0,-1000px);
}
to{
transform:translate(0,1060px);
}
}
</style>
</head>
<body>
<div>大家好，欢迎来到慕课网！</div>
</body>
</html>