html {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 14pt;
    line-height: 1.3;
  }
  
  body {
    width: 800px;
    max-width: 90%;
    margin: 5rem auto;
  }
  
  article {
    margin: 5rem 0;
  }
  
  section {
    margin: 3rem 0;
  }
  
  h1, h2, h3, h4, h5, h6 {
    font-weight: normal;
  }
  
  article > h1 {
    font-weight: bold;
  }
  
  samp {
    display: block;
    margin: 1em 0;
  }
  
  code, kbd {
    color: steelblue;
    font-style: normal;
    font-weight: normal;
  }
  
  code.tag::before {
    content: "<";
  }
  
  code.tag::after {
    content: ">";
  }
  
  ol.instructions {
    background-color: #f2f2f2;
    padding: 1rem 1rem 1rem 2rem;
    color: #666666;
    font-style: italic;
    font-size: 0.8rem;
    line-height: 1.2;
  }
  
  ol.instructions > li {
    margin: 0.4rem 0;
  }
  
  ol.instructions > li:first-child { margin-top: 0; }
  ol.instructions > li:last-child { margin-bottom: 0; }
  
  aside {
    padding: 1rem 2rem;
    color: white;
    background-color: gray;
    font-size: 0.8rem;
    margin: 1em 0;
  }
  
  .overflow-example {
    padding: 1rem;
    border: 1px solid gray;
  }
  
  .portrait {
    width: 125px;
  }
  
  .positioned-element {
    width: 50px;
    height: 50px;
    background-color: #ccc;
  }
  
  .static-example,
  .relative-example,
  .absolute-example,
  .fixed-example,
  .sticky-example {
    border: 1px solid #999;
    padding: 0 1rem;
  }

  .portrait {
    float: left;
    /* Instruction 3: Set margin with 2rem breathing room to right and bottom, 0 top and left */
    margin: 0 2rem 2rem 0;
  }
  
  /* Instruction from later in the document: Make .instructions clear floated items */
  .instructions {
    clear: both;
  }
  
  /* Additional basic styling for better presentation */
  body {
    font-family: Arial, sans-serif;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    line-height: 1.6;
  }
  
  .tag {
    background-color: #f0f0f0;
    padding: 2px 4px;
    border-radius: 3px;
    font-family: monospace;
  }
  
  code {
    background-color: #f0f0f0;
    padding: 2px 4px;
    border-radius: 3px;
    font-family: monospace;
  }
  
  dfn {
    font-style: italic;
    font-weight: bold;
  }
  
  .instructions {
    background-color: #e8f4f8;
    padding: 15px;
    border-left: 4px solid #2196F3;
    margin: 20px 0;
  }