diff --git a/mixins/helpers.less b/mixins/helpers.less
index d3fce8e..249922c 100644
--- a/mixins/helpers.less
+++ b/mixins/helpers.less
@@ -45,12 +45,18 @@
 }
 
 .placeholder(@color: #DDD) {
-	:-moz-placeholder {
-		color: @color;
-	}
-	::-webkit-input-placeholder {
-		color: @color;
-	}
+  ::-webkit-input-placeholder { /* WebKit browsers */
+    color:    @color;
+  }
+  :-moz-placeholder { /* Mozilla Firefox 4 to 18 */
+    color:    @color;
+  }
+  ::-moz-placeholder { /* Mozilla Firefox 19+ */
+    color:    @color;
+  }
+  :-ms-input-placeholder { /* Internet Explorer 10+ */
+    color:    @color;
+  }
 }
 
 #gradient {