@media screen and (min-width: 768px) {
    .modal-dialog {
      width: 700px; /* New width for default modal */
    }
    .modal-sm {
      width: 350px; /* New width for small modal */
    }
}
@media screen and (min-width: 992px) {
    .modal-lg {
      /*width: 950px; / New width for large modal */
      width: 1200px; /* New width for large modal */
    }
}