div.intro { background-color: yellow; color: black; font-size: larger; border: solid 3px red; padding: 0em 1em; font-weight: bold; margin-bottom: 1em}
div.demo { background-color: #e63a5a; color: #d4e63a; padding: 0.5em 1em; }
div#vocab, div#assembly, div#debug { border: solid 1px black; background-color: #bed3b3; padding: 0em 1em; margin: 1em;}
.code { font-family: monospace; }
@media screen and (min-width: 700px)  {
div#vocab { width: 40%; float:right;}
div#debug { width: 40%; float:left;}
}