#thumbnails img.thumbnail.active{border-color:#007acc}.vertical-menu nav ul{display:block;flex-direction:column}.vertical-menu nav ul li{display:block;width:100%}.vertical-menu nav ul li a{display:block;padding:0px 16px;border-bottom:0px solid #e2e2e2}.content-section-2,.content-section-3,.content-section-4{display:none}