.sidebar-caption-text {
    text-transform: none;
}

/* Widen the content column on large screens.
 * Furo's default is 46em (~736px); 60em (~960px) gives validation tables
 * and iframes noticeably more room without hurting text readability. */
@media (min-width: 82em) {
    .content {
        width: 60em;
    }
}