.wFormWebPage {
     background-image: url(//www.tfaforms.com/forms/get_image/163078/4cf3c9add02b27fc164f98eb49e24101-LIBRE_RSVP_Assets_BG4.png);
}

.wFormContainer {
     background-color: #f2f2f2;
     border-color: #20bad5;
     border-style: solid;
     border-width: 3px;
}