#c3 { margin:; padding:0px auto 0px auto; }
#c4 { margin:; padding:0px auto 0px auto; background-color:#00FF00;  }
#c5 { margin:; padding:0px 20px 0px 20px; }
#c6 { margin:; padding:0px auto 0px auto; }
#c7 { margin:; padding:0px 20px 0px 20px; background-image:url(image/oshirase-bg.gif); }