#top{
z-index: 100;
-webkit-animation: fly 8s ; /* Chrome, Safari, Opera */
animation: fly 8s ;
-webkit-animation-direction:normal;
}
@-webkit-keyframes fly {
0%{
opacity: 1;
width: 150px;
height: 150px;
position: absolute;
top: -10px;
left: -200px;
}
100%{
opacity: 0;
width: 10px;
height: 10px;
position: absolute;
top: 130px;
left: 640px;
}
}
`以上是我目前的css代码 谢谢!