.dark { .invert-if-dark { filter: invert(1) } } @media (prefers-color-scheme: dark) { .invert-if-dark { filter: invert(1) } } figure { &.small { width: 300px; } &.card { width: fit-content; img { height: 18rem; } } &.center { margin: 0 auto; figcaption { text-align: center } } } .outbox { display: flex; justify-content: center; // Default width width: var(--page-width); // Properly interpolate calc() in media queries @media screen and (min-width: 768px) { width: calc(var(--page-width) + 5rem * 2); margin: 0 -5rem; } @media screen and (min-width: 1200px) { width: calc(var(--page-width) + 10rem * 2); margin: 0 -10rem; } } .font-mono { font-family: var(--mono-font-family); }