* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-size: 17px;   /* up from default 16px */
    line-height: 1.7;
  }
  
  img {
    max-width: 100%;
    display: block;
  }
  
  a {
    color: inherit;
  }