body    { font-size: medium; text-decoration: none; background-color: #efefef }
p {}
td    { font-size: medium }
div.navi { width: 200px; float: left;}
div.navi1 { font-size: 80% }
div.contents1 {width: 600px; float: left;}
div.contents2 {width: 200px; margin-left: 760px }