Any ideas why?
.dashboard-edit,
.dashboard-delete {
height: 30px;
width: 50px;
background: url("https://i.stack.imgur.com/kRZeB.png") no-repeat top left;
text-indent: -9999px;
}
<a href="#" title="Edit" class="dashboard-edit">Edit</a>
<a href="#" title="Delete" class="dashboard-delete">Delete</a>