html {
  background: rgb(242, 233, 207);
  color: rgb(50, 50, 50);
  font-family: "toppan-bunkyu-mincho-pr6n", serif;
  font-feature-settings: "palt";
  word-break: break-word;
  font-size: 0.9rem;
  line-height: 2rem;
}

body {
  max-width: 600px;
  margin: auto;
  padding: 20px;
  margin-top: 150px;
}

.concept {
  font-size: 1rem;
  line-height: 2.6rem;
  font-weight: 600;
}

.divider {
  border: 0.1px;
  border-style: solid;
  border-color: rgb(100, 100, 100);
  margin: auto;
  margin-top: 6rem;
  margin-bottom: 4rem;
}

.message {
  line-height: 1.8rem;
}

/* パソコン表示 */
@media screen and (min-width: 640px) {
  .concept {
    padding: 10px;
    font-size: 1.2rem;
    line-height: 2.4rem;
  }
}