css3的阴影、透明和动画
阴影效果：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>xxx</title>
<style type="text/css">
.box {
width: 400px;
height: 400px;
background: pink;
//box-shadow:默认外阴影或inset内阴影，水平偏移，垂直偏移，模糊半径，扩展半径;
box-shadow:3px 3px 15px 3px gray;
}
</style>
</head>
<body>
<div class="box"></div>
</body>
</html>
透明效果：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>xxx</title>
<style type="text/css">
.boxOutside {
width: 410px;
height: 410px;
position: relative;
background: rgba(200, 200, 200, 0.3);
}
.boxInside {
width: 400px;
height: 400px;
position: absolute;
background: pink;
top: 0;
right: 0;
bottom: 0;
left: 0;
margin: auto;
}
</style>
</head>
<body>
<div class="boxOutside">
<div class="boxInside"><div>
</div>
</body>
</html>
动画效果：
1.transition
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>xxx</title>
<style type="text/css">
.boxOutside {
width: 500px;
height: 500px;
position: relative;
background: rgba(200, 200, 200, 0.3);
}
.boxInside {
width: 400px;
height: 400px;
position: absolute;
background: pink;
top: 0;
right: 0;
bottom: 0;
left: 0;
margin: auto;
transition: 1s width ease, 1s 1s height ease;
}
.boxInside:hover {
width: 500px;
height: 500px;
}
</style>
</head>
<body>
<div class="boxOutside">
<div class="boxInside"><div>
</div>
</body>
</html>
2.animation
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>xxx</title>
<style type="text/css">
.boxOutside {
width: 500px;
height: 500px;
position: relative;
background: rgba(200, 200, 200, 0.3);
}
.boxInside {
width: 400px;
height: 400px;
position: absolute;
background: #c00;
top: 0;
right: 0;
bottom: 0;
left: 0;
margin: auto;
}
.boxInside:hover {
-webkit-animation: 1s 1s rainbow 3;
animation: 1s 1s rainbow 3;
}
@-webkit-keyframes rainbow {
0%{background: #c00;}
50%{background: orange;}
100%{background: yellowgreen;}
}
@keyframes rainbow {
0%{background: #c00;}
50%{background: orange;}
100%{background: yellowgreen;}
}
</style>
</head>
<body>
<div class="boxOutside">
<div class="boxInside"><div>
</div>
</body>
</html>