MediaWiki:BrockyWB.css

position:absolute; top:0px; left:300px; width:300px; height:450px; /* Sidebar background */ background-color:#eeeeee; background-image: URL('https://78.media.tumblr.com/e6719ca807e41fe904f332ce60b52384/tumblr_oxi8nn9xxV1w4d880o2_400.jpg'); background-repeat:no-repeat; background-size:cover; z-index:1000; -webkit-transition: all 0.5s ease; -moz-transition: all 0.5s ease; -ms-transition: all 0.5s ease; -o-transition: all 0.5s ease; transition: all 0.5s ease; }
 * 1) sidebar {

-webkit-transform: translateX(-300px); -moz-transform: translateX(-300px); -ms-transform: translateX(-300px); -o-transform: translateX(-300px); transform: translateX(-300px); }
 * 1) sidebar.pushed{