/* ------------------------------
   暑さ指数(WBGT)について学ぼう
   ------------------------------ */
span.lp_orange {
  display: inline-block;
  margin: 0 .3em;
  color: #000;
  font-size: 250%;
}
span.ruby {
  position: relative;
  line-height: 2.5em;
}
span.ruby span.rt {
  position: absolute;
  left: 0;
/*  top: -1.0em;*/
  font: normal 50%/1 "MS PGothic",sans-serif;
  text-decoration: none;
  text-indent: 0;
/*  letter-spacing: 0.2em;*/
}


/*
span.ruby span.rp {
  display: none;
}
*/