@media screen and (min-width:950px){.head_nav>li.active>a>em::after{content:"";position:absolute;left:50%;bottom:-1px;width:100%;height:2px;transform:translateX(-50%);background:linear-gradient(90deg,transparent 0%,rgba(8,37,79,.35) 20%,#08254f 40%,#08254f 60%,rgba(8,37,79,.35) 80%,transparent 100%);border-radius:50%}}.head_nav>li.active>a em{color:#08254f}