*{margin:0; padding:0;}
body{background-color:#ddd;width:100%;}

#my_header{width:100%;border-bottom:2px solid #fff;background-color:#ccb; height:50px;}
#my_footer{width:100%;clear:both;background-color:#ccb;border-top:2px solid #fff;text-align:center; padding:1em 0;}

.contents p{margin:1em 0;}
li {list-style:none;}
h1{padding-left:20px;}

#my_navigation {background-color:#d6d6bb;}
#my_contents {background-color:#ddd6bb;}
#mynavi{padding:1em 1em 2em 1em;border:0px solid #fff;}
#mymain{padding:1em;border-left:1px solid #fff;}