@import url(https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css);
.social a {
    text-align: left	;
    width: 25px;
    height: 22px;
    float: center;
    background: #fff;
    border: 1px solid #ccc;
    box-shadow: 0 2px 4px rgba(0,0,0,0.15), inset 0 0 50px rgba(0,0,0,0.1);
    border-radius: 24px;
    margin: 0 5px 5px 0;
    padding: 6px;
    color: #800080;
}
.instagram a:hover {background: #3f729b; color: #fff;}
.facebook a:hover {background: #3b5998; color: #fff;}
.vk a:hover {background: #5d84ae; color: #fff;}