Dmitriy Konovalov

<div class="container">
    <div class="block">
        <img src="http://groundctrl.s3.amazonaws.com/clients/justin-timberlake/media/03/11/feature_images/assets/original.VdBDxo14evIQMNj14uZiR-N623UIA0uve9ZaHPbqpGs.jpg" alt="">
        <a href="#"><span>Some text</span></a>
    </div>
    
    <div class="block">
        <img src="http://groundctrl.s3.amazonaws.com/clients/justin-timberlake/media/01/06/feature_images/assets/original.rcb9s2aCheVeAzuiWpf1nR_qLoDvawEYuRuXApi6tcI.jpg" alt="">
        <a href="#"><span>Some text</span></a>
    </div>
        
    <div class="block">
        <img src="http://groundctrl.s3.amazonaws.com/clients/justin-timberlake/site/home/JoinTheTNKids.jpg" alt="">
        <a href="#"><span>Some text</span></a>
    </div>
        
    <div class="block">
        <img src="http://groundctrl.s3.amazonaws.com/clients/justin-timberlake/site/home/tourPhotos.jpg" alt="">
        <a href="#"><span>Some text</span></a>
    </div>
</div>

.container:before,
.container:after {
    clear: both;
    content: '';
    line-height: 0;
    display: block;
}

.block {
    width: 25%;
    float: left;
    background: #aaa;
    position: relative;
}
.block img {
    display: block;
    max-width: 100%;
}
.block a {
    top: 0;
    left: 0;
    opacity: 0;
    color: #fff;
    width: 100%;
    height: 100%;
    display: block;
    text-align: center;
    visibility: hidden;
    position: absolute;
    text-decoration: none;
    background: rgba(0,0,0,.5);
    -webkit-transition: all 0.2s;
            transition: all 0.2s;
}
.block a span {
    color: #fff;
    padding: 3px 5px;
    position: absolute;
    bottom: 0; right: 0;
    background: rgba(143, 0, 0, 1);
}
.block:hover a {
    opacity: 1;
    visibility: visible;
}