.con-title-box > a{position:relative;width:0px;transition:all 0.3s ease;}
.con-title-box > a:hover::before{content:'';position:absolute;bottom:0;width:100%;height:2px;background:#000;}

@media screen and (max-width:768px){
	.college-wrap .college-box .col-title-box a{width:14px;height:14px;background-size:13px;background-position:center;}
}