.list2{margin-top:20px; margin-left:20px; width:100%;}
.list2 li {
	width: 25%;
	height: 3rem;
	line-height: 3rem;
padding: 0 20px;
float:left;
}

.list2 li a {
	display: block;
	width: 100%;
	position: relative;
font-size: 16px;
color:#000;
}
.list2 li a:before {
	width: 0.24rem;
	height: 0.3rem;
	position: absolute;
right: .4rem;
top: .32rem;
	background-position: -0.52rem 0;
	
}
.list2 li a:hover {
	color:#228B86;
}