main  { width:800px; border:solid 2px #0033FF; }
main > header { width:798px; height: 50px; border:solid 1px red; text-align:center;  }
header p { font-size:25px; }
/* nav { height : 500px; width:150px; border:solid 1px red; float:left;  }  */
nav { height : 500px; width:150px; border:solid 1px red;  float:left; }
nav p { padding:5px; margin:0px }
article { border:solid 1px red; height : 500px; width:646px; float:left; }
article > header { font-size: 20px; padding: 15px} 
footer { border:solid 1px red; clear:both; text-align:center; color:blue }