View file news/design/blue/icons.css

[class^="icon-"],[class*=" icon-"] {
   width: 16px;
   height: 16px;
   display: inline-block;
   vertical-align: text-top;
}

.icon-rss {background: url(icons/16x16/rss.png) no-repeat;}
.icon-add {background: url(icons/16x16/add.png) no-repeat;}
.icon-list {background: url(icons/16x16/list.png) no-repeat;}
.icon-home {background: url(icons/16x16/home.png) no-repeat;}
.icon-delete {background: url(icons/16x16/delete.png) no-repeat;}