anchor.diff:  }
   
   /**
  - * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
  - *    controls in Android 4.
  - * 2. Correct the inability to style clickable types in iOS and Safari.
  + * Correct the inability to style clickable types in iOS and Safari.
    */
   
   button,
  -html [type="button"], /* 1 */
  +[type="button"],
   [type="reset"],
   [type="submit"] {
  -  -webkit-appearance: button; /* 2 */
  +  -webkit-appearance: button;
   }
   
   /**
  
positive.code:    ========================================================================== */
  
  /**
   * Remove the margin in all browsers (opinionated).
   */
  
  body {
    margin: 0;
  }
  
  /**
   * Add the correct display in IE 9-.
   */
  
  article,
  aside,
  footer,
  header,
  nav,
  section {
    display: block;
  }
  
  /**
  
negative.code: optgroup,
  select,
  textarea {
    font-family: inherit; /* 1 */
    font-size: 100%; /* 1 */
    line-height: 1.15; /* 1 */
    margin: 0; /* 2 */
  