[class*="iubenda-optout"] { display: none; }

.iubenda-message-wrapper > span { text-align: center; line-height: 1.3em; }

.iubenda-message-wrapper.iubenda-optout-iframe > span { background: #F4f4f4; padding: 20px 30px; display: inline-block; }

.iubenda-message-wrapper.iubenda-optout-vte { position: absolute; top: 0; background: rgba(244, 244, 244, 0.95); left: 0; width: 100%; height: 100%; z-index: 20; }
.iubenda-message-wrapper.iubenda-optout-vte > span { position: absolute; width: 90%; font-size: 1.3em; top: 50%; left: 50%; transform: translate(-50%, -50%); }

@media (max-width:480px) {
    .iubenda-message-wrapper.iubenda-optout-vte > span { font-size: 1em; }
}