div.wpforms-container-full .wpforms-form input[type=submit], div.wpforms-container-full .wpforms-form button[type=submit], div.wpforms-container-full .wpforms-form .wpforms-page-button {
    background-color: red;
    border: 1px solid #ddd;
    color: white;
    font-size: 1em;
    padding: 10px 15px;
}