buttons.jqueryui.scss in jquery-datatables-1.10.17

- old
+ new

@@ -46,17 +46,15 @@
 
 	.dt-button {
 		position: relative;
 		left: 0;
 		right: 0;
+		width: 100%;
 
 		display: block;
 		float: none;
 		margin-right: 0;
-
-		&:last-child {
-			margin-bottom: 4px;
-		}
+		margin-bottom: 4px;
 
 		&:hover > span {
 			background-color: rgba(0, 0, 0, 0.05);
 		}
 	}