Remove transparent & Change `text-indent 26px`

https://github.com/dom111/webdav-js/issues/22#issuecomment-438228763

assets/css/style.css

@@ -137,13 +137,12 @@ ul.list li a.move,
 ul.list li a.rename,
 ul.list li a.delete,
 ul.list li a.download {
-    color: transparent;
     padding: 5px;
     background: none;
     float: right;
     height: 16px;
     width: 16px;
-    text-indent: 100%;
+    text-indent: 26px;
     white-space: nowrap;
     overflow: hidden;
     background: none no-repeat center center;