/* Non-essential styles */
div,p, span { margin:10px; padding:5px; background-color:yellow;
             border-left:1px solid gray; border-right:2px solid black; 
             border-top:1px solid gray; border-bottom:2px solid black; }
p  { background-color:white; }
h2 { font-size:1.1em; margin:0; }
*.section { position:relative; background-color:gold; }


/* Essential Styles */

*.centered { width:380px; margin-left:auto; margin-right:auto; }
*.static   { position:static;                                  }
*.absolute { position:absolute;  top:20px;     left:215px;     }
*.fixed    { position:fixed;     bottom:20px;  right:5px;      }
*.relative { position:relative;  top:20px;     left:30px;      }
*.float    { float:right;                                      }