奔跑的北极熊特效实现——动画animation练习
源代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
body {
background-color: #ddd;
}
span {
display: block;
height: 100px;
width: 300px;
text-align: center;
line-height: 100px;
font-size: 48px;
margin: 150px auto;
border-bottom: 1px solid #00a4ff;
}
.bg1 {
position: absolute;
bottom: 0px;
height: 300px;
width: 100%;
background: url(image/bg1.png) repeat-x;
animation: change_bg 5s linear infinite;
}
.bg2 {
position: absolute;
bottom: 0px;
height: 300px;
width: 100%;
z-index: 1;
background: url(image/bg2.png) repeat-x;
animation: change_bg 5s linear infinite;
}
.img {
position: fixed;
bottom: 10px;
height: 100px;
width: 200px;
z-index: 2;
background: url(image/bear.png);
animation: bear .4s steps(8) infinite, change_pos 2s forwards;
}
@keyframes bear {
0% {
background-position: 0 0;
}
100% {
background-position: -1600px 0;
}
}
@keyframes change_pos {
0% {
left: 0;
}
100% {
left: 50%;
transform: translate(-50%, 0);
}
}
@keyframes change_bg {
0% {
background-position: 0 0;
}
100% {
background-position: -3840px 0;
}
}
</style>
</head>
<body>
<span>
奔跑的北极熊
</span>
<div class="bg1"></div>
<div class="bg2"></div>
<div class="img"></div>
</body>
</html>
所用资源图： bg1: bg2:
bear：
