@font-face {
      font-family: 'BBTreeGB';
      src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_nine_@1.1/BBTreeGB.woff') format('woff');
      font-weight: normal;
      font-style: normal;
    }

    * {
      font-family: BBTreeGB;
      font-size: 20px;
      line-height: 150%;
    }

    h1 {
      font-family: BBTreeGB;
      font-size: 30px;
    }

    body {
      background: black;
      color: white;
      overflow: hidden;
    }

    #dim {
      position: fixed;
      background: black;
      top: 20px;
      bottom: 20px;
      left: 20px;
      right: 20px;
      padding: 20px;
      z-index: 10;
      opacity: 0.4;
    }

    #maincontent {
      overflow-y: auto;
      position: fixed;
      top: 20px;
      bottom: 20px;
      left: 20px;
      right: 20px;
      padding: 20px;
      z-index: 10;
    }

    #maincontent * {
      padding: 0px;
      margin: 0px;
    }

    #maincontent p {
      padding-top: 20px;
    }

    a {
      color: yellow;
    }