.thumbnails{display:flex;overflow:hidden;width:100%}.thumbnails li{flex:0 0 25%;list-style-type:none;transition:transform .5s ease-in-out}.thumbnails-container{position:relative}.arrow{position:absolute;top:50%;transform:translateY(-50%);font-size:30px;cursor:pointer;z-index:10}.left{left:-50px!important}.right{right:0!important}