.bandeau,.base{width:100%;height:53px;text-align:center;position:fixed}#backUpSwitch,.bandeau,.base{position:fixed}.bandeau{top:0;background-color:#000}.base{bottom:0;background-color:green;vertical-align:sup}.less{-webkit-user-select:none;-webkit-touch-callout:none;-moz-user-select:none;-ms-user-select:none;user-select:none}#backUpSwitch{display:none;bottom:32px;right:30px;z-index:99;font-size:30px;border:none;outline:0;background-color:#ccc;color:#fff;cursor:pointer;padding:0 12px 6px;border-radius:4px}#backUpSwitch:hover{background-color:#999}