:root{--color-text: black;--color-background: white;--font-primary: "Arial";--font-headings: "Arial";--page-width: 60ch}html{background:var(--color-background)}body{color:var(--color-text);background:var(--color-background);margin:auto;padding:2ch;max-width:var(--page-width);font-family:var(--font-primary)}body>header{text-align:center;padding:20px}body>footer{text-align:center;padding:20px}body>nav{display:flex;flex-flow:row wrap;text-align:center}body>nav>a{flex:1 1 auto;border:1px solid;padding:5px;margin:5px}h1,h2,h3,h4,h5,h6{font-family:var(--font-headings)}a{color:#add8e6;text-decoration:none}a:hover{color:var(--color-text)}blockquote{border-left:5px solid;padding-left:10px;margin-left:30px}