MediaWiki:Common.css

/* CSS placed here will be applied to all skins */

.gridexample {
  border:1px solid #ccc;
  min-height:10px;
  margin-bottom:20px;
}

.gridexample .content {
    background-color: #f5f5f5;
    min-height: 50px;
    margin-top: 3px;
    margin-bottom: 3px;
}