margin: 0;
padding: 0;
}
#body_centering{
position: absolute;
left: 50%;
height: 100%;
width: 728px;
margin-left: -364px;
}
.box_a{
float: left;
width: 528px;
background: #eeeeee;
height: 300px;
}
.box_b{
float: left;
width: 200px;
background: #c0c0c0;
height: 300px;
}
本文記述例)
