.et_pb_newsletter_form input {
    -webkit-appearance: none;
    padding: 14px 4% !important;
    font-size: 16px;
    color: #666;
    background-color: #fff;
    width: 100%;
    font-weight: 400;
    border-width: 0;
    border-radius: 3px;
}
span.validation-error {
    display: inline-block;
    height: 1em;
}

.et_pb_register_form .et_pb_newsletter_button {
    margin: 0;
    width: 100%;
    cursor: pointer;
}