.learn .tab-buttons .router-link-active{background-color:#081b33;color:#fff;position:relative}.learn .tab-buttons .router-link-active:after{content:" ";position:absolute;right:calc(50% - 6px);bottom:-12px;border-top:12px solid #081b33;border-right:7px solid transparent;border-left:7px solid transparent;border-bottom:none}