Update Html-and-CSS-Cheat-Sheet.md

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FreeCodeCamp · 3a08c739e67cc7ae8523ad7f5b2d3283fdb07860 · StartParadox committed Jan 16, 2016 · Jan 16, 2016 · 3a08c73
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commit 3a08c739e67cc7ae8523ad7f5b2d3283fdb07860
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Showing with 5 additions and 1 deletion.

+5 −1 Html-and-CSS-Cheat-Sheet.md
@@ -27,4 +27,8 @@ and over in the html<br>
 ### Center a horizontal list
 
 http://csswizardry.com/2011/01/create-a-centred-horizontal-navigation/
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+<hr>
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+### Sections and Outlines of an HTML Document
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+https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/Sections_and_Outlines_of_an_HTML5_document