#mosdef {
 width:786px;
   position:relative;
}

#mosdef h1 {
   width:786px;
   height:38px;
   text-indent:-9999px;
   margin:0;
   padding:0;
   background-image:url(../img/ttl-topics.png);
}

#mosdef p.def-texts{
width:756px;
line-height: 1.6em;
margin:0 auto;
}

#mosdef p.sub{
width:630px;
margin:0 0 10px 0;
}

#mosdef dl dt{
   width:786px;
   height:100px;
   text-indent:-9999px;
   margin:0;
   padding:0;
   background-image:url(../img/ttl-about.png);
}

#mosdef dl dd{
   float:left;
}

#mosdef dl dd.img{
width:156px;
}

#mosdef dl dd.texts{
width:630px;
}