h1 {
  flex-direction: column;
}
h1 > strong {
  font-size: 40px;
  background: linear-gradient(transparent 60%, #FFFF00 30%);
  display: inline-block;
}
@media screen and (max-width: 599px) {
  h1 > strong {
    font-size: 24px;
  }
}
h1 > em {
  font-size: 20px;
  margin-top: 10px;
}
@media screen and (max-width: 599px) {
  h1 > em {
    font-size: 14px;
    margin-top: 5px;
  }
}

#category-list {
  margin-top: 120px;
  margin-bottom: 120px;
}