@charset "UTF-8";
section {
  box-sizing: border-box;
  padding: 20px 20px;
  background: url(../images/section_back.png) no-repeat;
}

h2 img {
  width: 100%;
  max-width: 900px;
  height: auto;
  box-sizing: border-box;
}
section p {
  padding: 0 10px;
}
section {
  width: 50%;
}
section#topics dl {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}
section#topics dt {
  width: 22%;
  font-weight: bold;
  text-align: right;
  
}
section#topics dd {
  width: 73%;
  margin-bottom: 10px;
}
h3 {
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  font-size: 1.125rem;
}
h3::after {
  content: '';
  border-top: 1px solid #000;
  width: 17.5em;
  margin-left: 0.5em;
}

@media screen and (max-width: 767px) {
  main .flexArea {
    flex-wrap: wrap;
  }
  section {
    width: 80%;
    margin: 0 auto;
  }
  section#topics dl {
    display: block;
  }
  section#topics dt,
  section#topics dd {
    width: 100%;
    text-align: left;
  }
}