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<ul>
	<li><a href="#" class="arrow">link</a></li>
	<li><a href="#" class="arrow">link</a></li>
	<li><a href="#" class="arrow">link</a></li>
	<li><a href="#">link</a></li>
<ul>

li a.arrow {
	position: relative;
	&::after {
		content: "";
		display: block;
		width: 10px;
		height: 10px;
		border-top: 4px solid #333;
		border-right: 4px solid #333;
		-webkit-transform: rotate(45deg);
		transform: rotate(45deg);
		position: absolute;
		right: 10px;
		top: 50%;
		margin-top: -7px;
	}
}