html {
    background-color: white;
    }
    * {
        box-sizing: border-box;
      }
      h1 {
        color: white;
      }
      h2 {
        color: black;
      }
      body {
        margin: 0;
        font-family: sans-serif;
        background: #f5f6f7;
      }
      p {
        text-align: left;
        text-indent: 50px;
      }
      .header {
        text-align: center;
        text-transform: uppercase;
        padding: 32px;
        background-color: #0a0a23;
        color: #fff;
        border-bottom: 4px solid #fdb347;
        background-color: blue;
        height: 150px;
      }
      .info {
        background-color: white;
        text-align: center;
      }
      li {
        text-align: left;
      }
      #source {
        text-align: left;
      }
      .btn{
        margin-top:15px;
        border: 3px solid white;
        border-radius:15px;
        background-color:yellow;
        font-size:20px;
        font-weight: bold;
        font-family: 'Ubuntu Mono', monospace;
      }