html,body{position:relative;height:100%;background-image:none}#push{height:50%;margin-bottom:-160px;position:relative}#login-wrapper{clear:both;width:100%;position:relative;margin:0 auto}#login-form{margin:0 auto;width:420px}#login-dropdown{margin-top:10px}#login-dropdown .dropdown-toggle{color:#888}