* {
    box-sizing: border-box;
  }
  html, body {
    height: 100%;
    width: 100%;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
    font-size: 18px;
    color: #4C5A5D;
  }
  h1, h2, h3, h4, h5, h6 {
    font-weight: 300;
  }

  h1 {
      text-align: center;
  }
  main {
    height: 100%;
    margin-left: 2em;
    margin-right: 2em;
    margin-top: 1em;
    margin-bottom: 1em;
  }