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  <h1>You Can See The Text. But Can You See The Green Border?</h1>

  border: 1px solid green;
  display: contents;
  margin: 0px auto;
  text-align: center;
  max-width: 440px;

/* Note from me: this property seems to work as intended in Firefox Developer Edition. When working properly you will see nothing but an unstyled H1 element (except for styling it can inherit from its parent DIV). February 4, 2015 */

/* Note from HTML5 Weekly e-mail: "An interesting alternative to the usual block and inline display types where the contents of the element generates boxes but not the element itself."

https://groups.google.com/forum/?utm_source=html5weekly&utm_medium=email#!msg/mozilla.dev.platform/G2BkcDWptHQ/hlmh8bfWaq8J */

/* Note from Daniel Holbert:

"Conceptually, the <div> exists in the style tree (so e.g. your "text-align:center" style gets inherited to the h1, via the style system, and any other inherited properties or "div > * {" style rules would affect the children as well).  But the <div> does not exist in the
box tree.  It's replaced there with its children (just the <h1> in this case).  So, the border doesn't show up, and the 'width' & 'margin' also have no effect since they're styling a box that doesn't exist." */

/* Note from Mats Palmgren:

"The H1 will be displayed in DIV's parent and the DIV itself will not be displayed.  However, H1 still inherit style from the DIV so you can do 'h1 {border:inherit}' to get a green border.  And the DOM and CSS selectors works normally, so it still matches 'div h1 {}' etc." */
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