#caution_area {
  text-align: center;
  color: #001871;
  font-weight: bold;
  font-size: 130%;
  border: solid 2px #001871;
  margin: 0 auto 1em;
  padding: 10px;
}
#caution_area a {
  display: block;
}

#caution_h1 {
  font-size: 2rem;
  text-align: center;
  margin-top: 2em;
  font-weight: bold;
}

@media screen and (max-width: 780px) {
#caution_area {
  width: auto;
  margin: 0 7.3333333333vw 1em;
}

}
@media screen and (min-width: 781px) {
#caution_area {
  width: 90%;
}

}