.vp-tab-contents, .vp-empty-box, .vp-inner-wrapper {
    max-width: 600px;
    border: 1px solid #ddd;
    padding: 40px 30px 20px;
    margin: 0 auto;
    margin-top: 30px;
}

.vp-wrapper .vp-btn-primary {
    background-color: #e43928;
    color: #fff;
}