html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, table, p {
 margin: 0;
 padding: 0;
 border: 0;
 outline: 0;
 font-size: 1em;
}

body {
 font-family: "Trebuchet MS", Verdana, Arial, Helvetica, sans-serif;
 background-color: beige;
}

h1{font-size:200%;margin:1rem;}
h2{font-size:150%;margin:1rem;}
h3{font-size:125%;margin:1rem;}
p{margin:1rem;}
iframe{border-style:none;width:100%;height:500px;}
#top{clear:both;}
#left{float:left;margin-right:1rem;}
#content{float:left;width:80%;height:80%;}
#bottom{clear:both;}