要使用CSS创建左上旋转动画效果，您可以尝试运行以下代码-
<html>
<head>
<style>
.animated {
background-image: url(/css/images/logo.png);
background-repeat: no-repeat;
background-position: left top;
padding-top:95px;
margin-bottom:60px;
-webkit-animation-duration: 10s;
animation-duration: 10s;
-webkit-animation-fill-mode: both;
animation-fill-mode: both;
}
@-webkit-keyframes rotateInUpLeft {
0% {
-webkit-transform-origin: left bottom;
-webkit-transform: rotate(0);
opacity: 1;
}
100% {
-webkit-transform-origin: left bottom;
-webkit-transform: rotate(-90deg);
opacity: 0;
}
}
@keyframes rotateInUpLeft {
0% {
transform-origin: left bottom;
transform: rotate(0);
opacity: 1;
}
100% {
-transform-origin: left bottom;
-transform: rotate(-90deg);
opacity: 0;
}
}
.rotateInUpLeft {
-webkit-animation-name: rotateInUpLeft;
animation-name: rotateInUpLeft;
}
</style>
</head>
<body>
<div id = "animated-example" class = "animated rotateIn"></div>
<button onclick = "myFunction()">Reload page</button>
<script>
function myFunction() {
location.reload();
}
</script>
</body>
</html>