.article-nav ul li a {
    background-color: #fff;
    border-bottom: solid 1px #eee;
	display: block;
    position: relative;
    margin-bottom: 1px;
    padding: 1em 10px 1em 24px;
    color: #222;
    line-height: 1.5;
    text-decoration: none;
    -webkit-transition: background 0.3s ease-out, color 0.3s ease-out;
    transition: background 0.3s ease-out, color 0.3s ease-out;
}
.article-nav ul li a::before {
	content: "";
    display: block;
    position: absolute;
    left: 10px;
    top: 0;
    bottom: 0;
    margin: auto;
    width: 7px;
    height: 7px;
    border-top: 2px solid #009e94;
    border-right: 2px solid #009e94;
    -moz-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    -webkit-transform: rotate(45deg);
    transform: rotate(45deg);
}