纯CSS3鼠标滑过图片遮罩层动画特效

<link rel="stylesheet" type="text/css" href="path/to/css/bootstrap.min.css">
<link rel="stylesheet" type="text/css" href="path/to/css/font-awesome.min.css">

 HTML结构

该特效的HTML结构如下：

<div class="container">
    <div class="row">
        <div class="col-md-4 col-sm-6">
            <div class="box">
                <img src="images/1.jpg">
                <div class="box-content">
                    <h3 class="title">雷神索尔</h3>
                    <span class="post">卡通恶搞造型</span>
                    <ul class="icon">
                        <li><a href="#"><i class="fa fa-search"></i></a></li>
                        <li><a href="#"><i class="fa fa-link"></i></a></li>
                    </ul>
                </div>
            </div>
        </div>
 
        <div class="col-md-4 col-sm-6">
            <div class="box">
                <img src="images/2.jpg">
                <div class="box-content">
                    <h3 class="title">蜘蛛侠</h3>
                    <span class="post">卡通恶搞造型</span>
                    <ul class="icon">
                        <li><a href="#"><i class="fa fa-search"></i></a></li>
                        <li><a href="#"><i class="fa fa-link"></i></a></li>
                    </ul>
                </div>
            </div>
        </div>
 
        <div class="col-md-4 col-sm-6">
            <div class="box">
                <img src="images/3.jpg">
                <div class="box-content">
                    <h3 class="title">钢铁侠</h3>
                    <span class="post">卡通恶搞造型</span>
                    <ul class="icon">
                        <li><a href="#"><i class="fa fa-search"></i></a></li>
                        <li><a href="#"><i class="fa fa-link"></i></a></li>
                    </ul>
                </div>
            </div>
        </div>
    </div>
</div>

 CSS样式

为该鼠标滑过图片遮罩层特效添加如下的CSS样式。

.box{
    text-align: center;
    overflow: hidden;
    position: relative;
}
.box:before{
    content: "";
    width: 0;
    height: 100%;
    background: #000;
    padding: 14px 18px;
    position: absolute;
    top: 0;
    left: 50%;
    opacity: 0;
    transition: all 500ms cubic-bezier(0.47, 0, 0.745, 0.715) 0s;
}
.box:hover:before{
    width: 100%;
    left: 0;
    opacity: 0.5;
}
.box img{
    width: 100%;
    height: auto;
}
.box .box-content{
    width: 100%;
    padding: 14px 18px;
    color: #fff;
    position: absolute;
    top: 38%;
    left: 0;
}
.box .title{
    font-size: 25px;
    font-weight: 600;
    line-height: 30px;
    text-transform: uppercase;
    margin: 0;
    opacity: 0;
    transition: all 0.5s ease 0s;
}
.box .post{
    font-size: 15px;
    text-transform: capitalize;
    opacity: 0;
    transition: all 0.5s ease 0s;
}
.box:hover .title,
.box:hover .post{
    opacity: 1;
    transition-delay: 0.7s;
}
.box .icon{
    padding: 0;
    margin: 0;
    list-style: none;
    margin-top: 15px;
}
.box .icon li{
    display: inline-block;
}
.box .icon li a{
    display: block;
    width: 40px;
    height: 40px;
    line-height: 40px;
    border-radius: 50%;
    background: #f74e55;
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-right: 5px;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.5s ease 0s;
}
.box:hover .icon li a{
    opacity: 1;
    transform: translateY(0px);
    transition-delay: 0.5s;
}
.box:hover .icon li:last-child a{
    transition-delay: 0.8s;
}
@media only screen and (max-width:990px){
    .box{ margin-bottom: 30px; }
}

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