h1,
h2,
h3,
h4,
h5,
h6 {
  color: rgb(20, 20, 20); /* テキストの色を設定 */
}
h1 {
  font-size: 54px;
  font-weight: bold;
  line-height: 1.2;
}

h2 {
  font-size: 42px;
  font-weight: bold;
  line-height: 1.3;
}

h3 {
  font-size: 32px;
  font-weight: bold;
  line-height: 1.4;
}

h4 {
  font-size: 24px;
  font-weight: bold;
  line-height: 1.5;
}

h5 {
  font-size: 20px;
  font-weight: bold;
  line-height: 1.6;
}

h6 {
  font-size: 16px;
  font-weight: bold;
  line-height: 1.6;
}

a.button-simple,
a.button-secondary,
a.button-primary {
  display: inline-block;
  text-decoration: none;
  text-align: center;
}
.button-simple {
  background-color: white;
  color: black;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-size: 1rem;
  cursor: pointer;
  transition:
    background-color 0.3s ease,
    color 0.3s ease;
}
.button-simple:hover {
  background-color: #f5f5f5;
}
.button-secondary {
  background-color: none;
  color: #2e8b57;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-size: 1rem;
  cursor: pointer;
  transition: color 0.3s ease;
}
.button-secondary:hover {
  text-decoration: underline;
}
.button-primary {
  background-color: #2e8b57;
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-size: 1rem;
  cursor: pointer;
  transition:
    background-color 0.3s ease,
    color 0.3s ease;
}
.button-primary:hover {
  background-color: #276749;
}
/* ボタンのサイズ設定 */
.button-large {
  font-size: 32px;
  padding: 1rem 2rem;
}

.button-medium {
  font-size: 24px;
  padding: 0.75rem 1.5rem;
}

.button-small {
  font-size: 16px;
  padding: 0.5rem 1rem;
}

@media (max-width: 768px) {
  .button-large {
    font-size: 24px;
    padding: 0.75rem 1.5rem;
  }
  .button-medium {
    font-size: 16px;
    padding: 0.5rem 1rem;
  }
  .button-small {
    font-size: 12px;
    padding: 0.25rem 0.5rem;
  }
}