.iframe-form-preferencial {
    width: 100%;
    height: 38rem;
    border: none;
}

h1 {
    text-align: center;
    color: #0b2739;
    padding-bottom: 30px;
}

@media (min-width:768px) {
    .iframe-form-preferencial {
        height: 28rem;
    }
}