.rt-express-cod-form-wrapper {
    margin-top: 1.25em;
    border: 1px solid #e5e5e5;
    padding: 12px;
    background: #fafafa;
}
.rt-express-cod-form h3 {
    margin-top: 0;
}
.rt-express-cod-form .rt-field {
    width: 100%;
    max-width: 420px;
}