:root{color-scheme:dark;font-family:Segoe UI,system-ui,-apple-system,BlinkMacSystemFont,Hiragino Sans,Yu Gothic,sans-serif;background-color:#000;color:#f5f5f5}html{font-size:17px}body,html{margin:0;height:100%}body{min-height:100%;display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start}*{box-sizing:border-box}