这是一款CSS3鼠标hover图片动画特效代码。该鼠标hover动画使用简单的CSS transition技术，配合元素的宽度变化，制作出炫酷的鼠标hover图片遮罩层动画效果。

使用方法

在页面中引入bootstrap.min.css和font-awesome.min.css文件。

HTML结构

每一张图片以一个div.box为容器，div.box-content用于制作鼠标hover时的遮罩层动画效果。

CSS样式

然后通过下面的CSS样式来制作鼠标hover时图片遮罩层的动画效果。

.box{

overflow: hidden;

position: relative;

}

.box:before{

content: "";

display: block;

border: 30px solid rgba(255, 255, 255, 0.3);

position: absolute;

top: 5px;

left: 5px;

bottom: 5px;

right: 5px;

opacity: 1;

z-index: 2;

transition: all 1s ease 0s;

}

.box:hover:before{ border: 1px solid rgba(255, 255, 255, 0.18); }

.box:after{

content: "";

display: block;

border: 10px solid #fff;

position: absolute;

top: 35px;

left: 35px;

bottom: 35px;

right: 35px;

opacity: 1;

z-index: 1;

transition: all 0.3s ease 0s;

}

.box:hover:after{

top: 0;

left: 0;

bottom: 0;

right: 0;

opacity: 0;

}

.box img{

width: 100%;

height: auto;

transform: scale(1.1);

transition: all 1s ease 0s;

}

.box:hover img{ transform: scale(1); }

.box .box-content{

padding: 20px;

text-align: center;

color: #fff;

position: absolute;

top: 45px;

left: 45px;

bottom: 45px;

right: 45px;

opacity: 1;

z-index: 2;

transition: all 0.3s ease 0s;

}

.box:hover .box-content{

top: 6px;

left: 6px;

bottom: 6px;

right: 6px;

}

.box .box-inner-content{

width: 100%;

padding-bottom: 20px;

opacity: 0;

position: absolute;

bottom: 0;

left: 0;

transition: all 0.3s ease 0s;

}

.box:hover .box-inner-content{ opacity: 1; }

.box .title{

font-size: 26px;

font-weight: bold;

margin: 0;

}

.box .post{

display: block;

font-size: 16px;

font-style: italic;

margin-bottom: 10px;

}

.box .icon{

padding: 0;

margin: 0;

list-style: none;

}

.box .icon li{ display: inline-block; }

.box .icon li a{

display: block;

width: 40px;

height: 40px;

line-height: 40px;

border-radius: 50%;

background: #fff;

margin-right: 10px;

font-size: 18px;

color: #000;

transition: all 0.3s ease 0s;

}

.box .icon li a:hover{

background: #000;

color: #fff;

}

@media only screen and (max-width:990px){

.box{ margin-bottom: 30px; }

}