:root {
    color-scheme: light dark;
    color: CanvasText;
    background: Canvas;
    font: 16px/1.5 serif;
}

body {
    max-width: 80ch;
    margin: 0 auto;
    padding: 1rem;
}

img, svg, video, canvas {
    display: block;
    max-width: 100%;
    height: auto;
}