silverstripe-webpack/app/client/dist/css/app_dev.css

#DevUtilities{display:none;left:0;position:absolute;width:100%;z-index:999}#DevUtilities .navs{left:0;position:fixed;z-index:999}#DevUtilities .original{background-color:transparent;background-position:top;background-repeat:no-repeat;background-size:1854px auto;height:10000px;left:0;opacity:.5;position:absolute;top:0;width:100%}#DevUtilities .original:hover{opacity:1}