.container .gallery a img {
            float: left;
            width: 25%;
            height: auto;
            border: 2px solid #fff;
            -webkit-transition: -webkit-transform .15s ease;
            -moz-transition: -moz-transform .15s ease;
            -o-transition: -o-transform .15s ease;
            -ms-transition: -ms-transform .15s ease;
            transition: transform .15s ease;
            position: relative;
        }

        .clear {
            clear: both;
        }