@media (prefers-color-scheme: dark) {

    img.invertible {
        filter: invert(1);
    }

}

nav img {
    height: 4em;
}

div.phone-field {
    opacity: 0;
    position: absolute;
    top: 0;
    left: 0;
    height: 0;
    width: 0;
    z-index: -1;
}

.question-id {
    font-size: 0.68em;
    font-style: italic;
}