.c-gallery {
    position: relative;
    margin: 0 auto;
    max-width: 640px;}
.c-gallery a {display: none;}
.c-gallery a:first-child {display: block;}
.c-gallery img {width: 100%;}
.c-gallery__icon {
    position: absolute;
    height: 80px;
    width: 80px;
    left: 50%;
    top: 50%;
    margin-left: -40px;
    margin-top: -40px;
    background: url("../img/gallery.svg") no-repeat;
    background-size: 50%;
    background-position: center;
    cursor: pointer;
    z-index: 1;
    transition: transform .1s ease;
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
}