body{
  font-size:0.8em;
}

.fontB{
  background:url(../image/textSizeB_out.jpg) top left no-repeat;
  width:28px;
  height:28px;
  cursor:pointer;
  display:block;
}

.fontM{
  background:url(../image/textSizeM_out.jpg) top left no-repeat;
  width:28px;
  height:28px;
  cursor:pointer;
  display:block;
}

.fontS{
  background:url(../image/textSizeS_over.jpg) top left no-repeat;
  width:28px;
  height:28px;
  cursor:pointer;
  display:block;
}