body {
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}
.box21 {
margin:1em 0; 
width:80% 
}
.u01 {
background:url(f-ue1.gif) repeat-x;
height:23px;
margin:0 23px;
  margin-top: 10px;

}
.s01 {
background:url(f-sita1.gif) repeat-x;
height:23px;
margin:0 23px
}
.box-top {
background-image:url(f-kado11.gif), url(f-kado21.gif);
background-position:top left, top right;
background-repeat:no-repeat, no-repeat;
height:23px

}
.box-center {
background-image:url(f-migi1.gif), url(f-hidari1.gif);
background-position:top right, top left;
background-repeat:repeat-y, repeat-y
}
.box-inner {
background:#ffd6da; 
margin:0 23px
}
.box-bottom {
background-image:url(f-kado31.gif), url(f-kado41.gif);
background-position:top left, top right;
background-repeat:no-repeat, no-repeat;
height:23px;
}