/* general styling */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  html, body {
    height: 100%;
    margin: 0;
  }
  
  .container {
    color: #eee;
    margin: 0 auto;
    text-align: center;
  }
  
  h1 {
    font-weight: normal;
    letter-spacing: .125rem;
    text-transform: uppercase;
  }
  
  #banner li {
    display: inline-block;
    font-size: 1.3em;
    list-style-type: none;
    padding: 1em;
    text-transform: uppercase;
  }

  li span {
    display: block;
    font-size: 4.5rem;
  }
  
  .message {
    font-size: 4rem;
  }
  
  #content {
    display: none;
    padding: 1rem;
  }
  #btnvisible {
    display: none;
    padding: 1rem;
  }


  
  @media all and (max-width: 768px) {
    h1 {
      font-size: 1.3rem;
    }
    h3 {
      font-size: 1.2rem !important;
    }
    
    li {
      font-size: 0.8rem;
      padding: .75rem;
    }
    
    li span {
      font-size: 2rem;
    }
  }