#header { margin: 10px 2em 1cm 2%; font-family: Verdana, Helvetica, "Gill Sans", sans-serif; font-size: 10px; color: red !important; background-color: green; background-color: rgba(0,128,0,0.7); frequency: 30Hz; } body { color: green; font: 75% "Lucida Grande", "Trebuchet MS", Verdana, sans-serif; }