.wFormWebPage {
     background-image: url(//www.tfaforms.com/forms/get_image/163078/25f2c7fb3d61ff3a304b9d3da7128a16-LIBRE_RSVP_Assets_BG3.png);
}

.wForm fieldset {
     background-color: #cfc68f;
}

.wFormContainer {
     background-color: #faf6df;
     border-color: #20bad5;
     border-style: solid;
     border-width: 3px;
}