:root { --bg: #242424; } body { background-color: var(--bg); color: #ffffff; } #preview { background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; width: fit-content; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; font-weight: 500; } #output_error { color: red; }