.horizontal{display:flex;align-items:center;flex-wrap:wrap}.filter{position:relative;height:42px;border-radius:2px;border-width:2px;border-style:solid;border-color:transparent;margin:2px}.selected{border-color:purple;background:purple}.thumbnail{width:74px;height:42px;border-radius:2px}#filter-half>a{width:74px;height:42px;background:url(/teams-videoapp-sample/app/img/half.png)}#filter-gray>a{width:74px;height:42px;background:url(/teams-videoapp-sample/app/img/gray.png)}a{display:block}