There were two descriptions explaining what a strong tag is.
The More Information links were duplicated.
Also corrected inconsistent and incorrect markdown/html formatting.
* Corrected markdown and code sample formatting
Added code highlighting to `<p>`, to prevent it being interpreted as a new paragraph.
Also made indentation in the code sample consistent.
* Fixed typo and formatting
* Translate challenge subtitles and example challenge text to Spanish
* Corrected errors in syntax and punctuation
* Multiple corrections of it/s to its plus other grammar corrections
* Correction and added paragraph to CSS Flex article
* Corrected my own typo
* Corrected capitalization, American spellings and typos
Expanded b tag article to provide greater clarity and additional guidance
Replaced example with more appropriate one
Removed link to w3schools as info there is out of date and therefore misleading
