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css3中一些常用的动画效果

2017-11-17 16:28 741 查看

1.动画效果一：鼠标放上去，后面的背景图放大到一定程度，下面的有个内容盒子，以一定的速度从下向上运动，并且盒子的背景颜色逐渐加深。

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
* {
margin: 0;
padding: 0;
}
.big {
width: 420px;
height: 372px;
overflow: hidden;
position: relative;
border: 1px solid #000;
}
.bigone {
position: absolute;
top: 0;
left: 0;
}
.bigone .pic {
width: 100%;
height: 100%;
overflow: hidden;
}
.bigone .pic img {
width: 100%;
height: 100%;
transition: all 0.5s;
}
.big:hover img {
transform: scale(1.5);
}
.bigone .dl {
position: absolute;
bottom: 0;
left: 0;
width: 100%;
height: 109px;
background: rgba(0,0,0,0.4);
}
.bigone .dl p {
font-size: 30px;
color: #fff;
padding: 20px;
}
.bigtwo {
width: 100%;
height: 260px;
position: absolute;
bottom: -120px;
left: 0;
background: rgba(0,0,255,0);
transition: all 0.5s;
}
.bigtwo p {
font-size: 18px;
color: rgba(255,255,255,0);
padding: 10px;
}
.big:hover .bigtwo {
transform: translateY(-120px);
background: rgba(0,0,255,0.7);
}
.big:hover p {
color: rgba(255,255,255,1);
}
</style>
</head>
<body>
<div class="big">
<div class="bigone">
<div class="pic">
<img src="1.jpg" alt="">
</div>
<div class="dl">
<p>这是一段话</p>
</div>
</div>
<div class="bigtwo">
<p>这是遮罩层</p>
</div>
</div>
</body>
</html>

效果二：鼠标放到盒子上有一个类似于开门的效果，并且下面的背景颜色和字体的颜色会有一个渐变的过程。

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
.big {
width: 500px;
height: 400px;
position: relative;
overflow: hidden;
}
.big:after,.big:before {
content: "";
display: block;
width: 50%;
height: 100%;
background: rgba(0,0,0,0.4);
position: absolute;
top: 0;
transition: all 1s;
}
.big:after {
left: 0;
}
.big:before {
right: 0;
}
a {
position: absolute;
top: 50%;
left: 50%;
margin-left: -100px;
margin-top: -100px;
width: 200px;
height: 200px;
border-radius: 50%;
background: rgba(0,0,0,0.7);
color: #fff;
text-decoration: none;
transition: all 1s;
}
.small {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%,-50%);
}
span {
font-size: 16px;
color: #fff;
transition: all 1s;
}
p {
font-size: 12px;
color: #fff;
text-align: center;
transition: all 1s;
}
.big:hover:after {
left: -50%;
}
.big:hover:before {
right: -50%;
}
.big:hover a {
background: yellow;
}
.big:hover span,.big:hover p {
color: red;
}
</style>
</head>
<body>
<div class="big">
<a href="#">
<div class="small">
<span>这是一个盒子</span>
<p>摄影</p>
</div>
</a>
</div>
</body>
</html>

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