@charset"EUC-JP";

body{
margin:0;
padding:0;
}

h1,h2,h3,h4,h5,h6,p{
margin:0;
padding:0;
}

div#container{
  width:800px;
  margin-top:10px;
  margin-left:auto;
  margin-right:auto;
  background-color:#ffffff;
}  

div#container_a{
  width:800px;
  margin-top:10px;
  margin-left:auto;
  margin-right:auto;
 background-image: url('http://www.geocities.jp/server-errors/not_found.html');
}