aside, article, hgroup, nav, header, footer, section { display: block; }

body {
    background-color: LightYellow;
    line-height: 150%;
    margin-left: 1em;
    margin-right: 1em;
}

a:link    { color: blue; }
a:visited { color: purple; }
a:active  { color: blue; }
/* a:hover   { color: aqua; } */

a:link, a:visited, a:active, a:hover { text-decoration: none; }

hr { color: green; }

div.header { line-height: 150%; }
div.footer { font-size: small; line-height: 125%; }
div.nav { font-size: small; line-height: 125%; }
div.nav ul { margin-left: 0em; }

.menu { font-size: small; line-height: 125%; }
.menu h3 { color: black; font-size: medium; }
.menu ul { margin-left: 0em; }

h1 { color: black;  font-size: x-large; } /* background-color: lightgreen; } */
h2 { color: olive;  font-size: large; } /*  background-color: lightblue;  } */
h3 { color: magenta; font-size: large; }
h4 { color: green;  font-size: medium; }

div.code { margin-left: 2em; }