body{background-color:#ddd;width:100%;}
#my_body{margin:0 auto; width:785px;border-left:1px solid #fff;border-right:1px solid #fff;text-align:center;}

#my_navigation { float : left ; width : 150px ;background-color:#d6d6bb;text-align:left;}
#my_contents { float : left ; width : 630px ; background-color:#d6d6bb;border-left:1px solid #fff;text-align:left;}

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

#mynavi{padding:1em 0 2em 1em;border:0px solid #fff;text-align:left;}
#mymain{padding:1em;border-left:1px solid #fff;text-align:left;}