#contents {
  width: 950px;
  margin: 0 auto;
  padding: 40px 20px 130px;
  font-size: 128.6%;
  line-height: 1.56;
}
#contents .size-link a {
  text-decoration: none;
}

.page-ttl {
  font-size: 211.1%;
  margin-bottom: 15px;
}

.page-lead {
  margin-bottom: 50px;
}

.topics {
  margin-bottom: 100px;
  text-align: left;
}
.topics:last-child {
  margin-bottom: 0;
}

.topic-ttl {
  font-size: 155.6%;
  font-weight: bold;
  color: #FFF;
  background-color: #ef757f;
  border-radius: 5px;
  text-align: center;
  margin-bottom: 50px;
  padding: 8px;
}

.topic-img {
  text-align: center;
}

.topic-list {
  margin-top: 10px;
}
.topic-list dt {
  font-size: 144.4%;
  font-weight: bold;
  margin-bottom: 10px;
}
.topic-list dt:last-child {
  margin-bottom: 0;
}
.topic-list dt span {
  color: #ef757f;
  margin-right: 20px;
}
.topic-list dd {
  margin-bottom: 40px;
}
.topic-list dd:last-child {
  margin-bottom: 0;
}

.topic-lead {
  font-size: 122.2%;
  font-weight: bold;
  color: #ef757f;
  margin-bottom: 8px;
}

.bust-sizing {
  background-color: #f9e5e3;
  width: 530px;
  margin: 50px auto 0;
  padding: 28px 15px;
  text-align: center;
  font-weight: bold;
}

.sizing-formula {
  font-size: 144.4%;
  line-height: 1.69;
  margin-top: 15px;
}
.sizing-formula span {
  color: #ef757f;
}

.size-link {
  width: 400px;
  margin: 110px auto 0;
}
.size-link a {
  display: block;
  text-align: center;
  color: #333333;
  border: #333333 solid 1px;
  padding: 15px;
}
@media only screen and (max-width: 640px) {
  #contents {
    width: auto;
    padding: 30px 15px 50px;
    font-size: 1.6rem;
    text-align: left;
  }
  .page-ttl {
    font-size: 2.6rem;
    text-align: center;
  }
  .topics {
    margin-bottom: 60px;
  }
  .topic-ttl {
    font-size: 2.2rem;
    padding: 3px;
    margin-bottom: 30px;
  }
  .topic-img {
    max-width: 280px;
    margin: 0 auto;
  }
  .topic-list {
    margin-top: 20px;
  }
  .topic-list dt {
    font-size: 2.0rem;
    margin-bottom: 6px;
  }
  .topic-list dd {
    margin-bottom: 30px;
  }
  .topic-lead {
    font-size: 1.6rem;
  }
  .bust-sizing {
    width: auto;
    padding: 20px 10px;
    margin-top: 30px;
  }
  .sizing-formula {
    font-size: 2.0rem;
  }
  .size-link {
    width: auto;
    margin: 50px auto 0;
  }
}