<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>动画《淡入淡出》</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" type="text/css" media="screen" href="main.css" />
<script src="main.js"></script>
<style type="text/css">
.word {
font-size: 20px;
text-align: center;
}
@keyframes fadeInOut1 {
0% {
opacity: 1;
}
25% {
opacity: 0;
}
50% {
opacity: 1;
}
75% {
opacity: 0;
}
}
@-moz-keyframes fadeInOut1
/* Firefox */
{
0% {
opacity: 1;
}
25% {
opacity: 0;
}
50% {
opacity: 1;
}
75% {
opacity: 0;
}
}
@-webkit-keyframes fadeInOut1
/* Safari 和 Chrome */
{
0% {
opacity: 1;
}
25% {
opacity: 0;
}
50% {
opacity: 1;
}
75% {
opacity: 0;
}
}
@-o-keyframes fadeInOut1
/* Opera */
{
0% {
opacity: 1;
}
25% {
opacity: 0;
}
50% {
opacity: 1;
}
75% {
opacity: 0;
}
}
@keyframes fadeInOut2 {
0% {
opacity: 0;
}
25% {
opacity: 1;
}
50% {
opacity: 0;
}
75% {
opacity: 1;
}
}
@-moz-keyframes fadeInOut2
/* Firefox */
{
0% {
opacity: 0;
}
25% {
opacity: 1;
}
50% {
opacity: 0;
}
75% {
opacity: 1;
}
}
@-webkit-keyframes fadeInOut2
/* Safari 和 Chrome */
{
0% {
opacity: 0;
}
25% {
opacity: 1;
}
50% {
opacity: 0;
}
75% {
opacity: 1;
}
}
@-o-keyframes fadeInOut2
/* Opera */
{
0% {
opacity: 0;
}
25% {
opacity: 1;
}
50% {
opacity: 0;
}
75% {
opacity: 1;
}
}
.transone {
animation: fadeInOut1 2s ease-in-out infinite reverse;
/* Firefox: */
-moz-animation: fadeInOut1 2s ease-in-out infinite reverse;
/* Safari 和 Chrome: */
-webkit-animation: fadeInOut1 2s ease-in-out infinite reverse;
/* Opera: */
-o-animation: fadeInOut1 2s ease-in-out infinite reverse;
}
.transtwo {
animation: fadeInOut2 2s ease-in-out infinite reverse;
/* Firefox: */
-moz-animation: fadeInOut2 2s ease-in-out infinite reverse;
/* Safari 和 Chrome: */
-webkit-animation: fadeInOut2 2s ease-in-out infinite reverse;
/* Opera: */
-o-animation: fadeInOut2 2s ease-in-out infinite reverse;
}
</style>
</head>
<body>
<div class="word">进入
<span class="transone">></span>
<span class="transtwo">></span>
</div>
</body>
</html>
