body{
  margin:0;
  padding:0;
  font:85% arial, hevetica, sans-serif;
  text-align:center;
  color:#000000;
}
	
#container{
  margin:1em auto;
  width:930px;
  text-align:left;
}
	
#header{
  width:98%;
  border:1px dashed green;
}
	
#contents{
}
	
.content_01{
  float:left;
  width:20%;
  height:380px;
  margin:1% 0 0 0;
  border:1px dashed red;
}
	
.content_02{
  float:left;
  width:20%;
  height:380px;
  margin:1% 1% 0 1%;
  border:1px dashed red;
}
	
.content_03{
  float:left;
  width:50%;
  height:380px;
  margin:1% 0 0 0;
  border:1px dashed red;
}