main {
  max-width: 1080px !important; /* 使える横幅を広げるため、style.cssをoverride */
  h1 {
    text-align: center;
    font-size: 32.4px;
    font-weight: normal;
    margin: 0;
  }

  h2 {
    margin: 10px 0 25px 0;
    font-size: 17.25px;
    font-weight: normal;
    color: rgb(216, 56, 0);
    text-align: center;
  }

  a{
    text-decoration: none;
    color: rgb(33, 150, 243);
    &:hover {
      color: rgb(153, 153, 153);
    }
  }

  .link-title{
    font-size: 21.6px;
  }

  .link-help{
    font-size: 16px;
  }

  .section{
    padding: 0 0 0 20px;
    list-style: none;
  }

  .chapter{
    padding: 0;
    list-style: none;
  }
}