*, *::before, *::after { box-sizing: inherit; } html { color-scheme: light dark; } body { font-family: sistem-ui; line-height: 1.5; font-size: 1.17rem; box-sizing: border-box; margin: 0; padding: 0; } main { width: min(71ch, 100% - 4rem); margin-inline: auto; } img, svg, video { max-width: 100%; display: block; } pre { overflow-x: auto; }