Left Right Arrow with hover effect using Roko C. Buljan box-shadow trick
.arr {_x000D_
display: inline-block;_x000D_
padding: 1.2em;_x000D_
box-shadow: 8px 8px 0 2px #777 inset;_x000D_
}_x000D_
.arr.left {_x000D_
transform: rotate(-45deg);_x000D_
}_x000D_
.arr.right {_x000D_
transform: rotate(135deg);_x000D_
}_x000D_
.arr:hover {_x000D_
box-shadow: 8px 8px 0 2px #000 inset_x000D_
}
_x000D_
<div class="arr left"></div>_x000D_
<div class="arr right"></div>
_x000D_