#article-content {
  width: 900px;
}

#article-content > table {
  margin-top: 30px;
  width: 100%;
}

#article-content table tr th,
#article-content table tr td {
  padding: 0.3em 0.6em;
  //font-size: 21px;
  font-size: 19px;
  line-height: 1.6em;
  text-align: left;
  vertical-align: top;
  border: solid 1px #666666;
}

#article-content > table tr th {
  text-align: center;
  font-weight: normal;
  font-size: 17px;
  color: #ffffff;
  background-color: #888888;
}

#article-content > table tr th:nth-of-type(1) {
  width: calc(100%/5);
}

#article-content > table tr td > h1 {
  font-weight: bold;
}

#article-content > table tr td.kyuukei {
  text-align: center;
  vertical-align: middle;
}