body { background: #c0c0c0; color: black; font-family:Times New Roman,Times,Serif}
h1 { text-align: center; }

div { border: 1px solid black; padding: 10px 10px 10px 10px; }
span.attr { color: black; font-weight: bold;
            font-family: Helvetica, sans-serif; }

.foo { background: red; color: white; }
.bar { background: #f1b500; color: white; }
.alpha { background: #008576; color: white; }
.ref { background: MidnightBlue; color: white; }
.junk { background: purple; color: white; }

.quiz { background: #99CC99; color: black; }
.question { background: #99CCFF; color: black; }
.input_item { background: #CCFFFF; color: black; }
.input { background: #CC99CC; color: black; }
.answer { background: #FF99CC; color: black; }