.masthead{position:relative;overflow:hidden}.container{clear:both;position:relative}.shade-overlay{position:absolute;width:100%;height:100%;left:0;top:0}.float50{float:left;width:50%}.rightbox .form{background-color:#fff;box-shadow:0px 0px 15px rgba(0,0,0,.3);padding:30px;max-width:450px;margin-left:auto}@media(max-width:800px){.float50{float:none;width:auto;padding:15px}.rightbox .form{margin-right:auto}}