.photo_a{text-align:center;position:relative;margin-bottom:10px}.photo_a .preview{position:absolute;top:0;left:0;width:100%;height:100%;background-color:rgba(60,63,70,.4);z-index:3;opacity:0;transition:all .35s;display:block}.photo_a .preview:before{display:block;content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:50px;height:50px;background-image:url(img/lupa.png);background-repeat:no-repeat}.photo_a .preview:hover{opacity:1}.photo_a img{max-width:100%}.desc{font-size:12px}.mb-4{margin-bottom:30px}