body {
      padding-bottom: 48px;
      padding-top: 24px;
    }

    /* Custom container */
    .container-narrow {
      margin: 0 auto;
      max-width: 700px;
    }
    .container-narrow > hr {
      margin: 30px 0;
    }

    /* Main marketing message and sign up button */
    .jumbotron {
      margin: 72px 0;
      text-align: center;
    }
    .jumbotron-heading {
      font-size: 72px;
      line-height: 1;
    }
    .jumbotron .btn {
      font-size: 21px;
      padding: 12px 24px;
    }

    /* Supporting marketing content */
    .marketing {
      margin: 72px 0;
    }
    .marketing p + h2 {
      margin-top: 24px;
    }