body {
   background-image: url("https://ideasphere.com/wp-content/uploads/2016/08/Savin-NY-Website-Background-Web-1.jpg") !important; 
   }

.modal-dialog {
    border: 1px solid #b8b8b8;
    height: auto;
    margin-bottom: 50px;
    margin-top: 50px;
    width: 100%;
}