* Add missing terminators + other corrections
Missing terminators were added and for loop formatting was corrected. Even though terminators are optional, they can often confuse beginners. Also, a typo and a grammatical error was corrected.
* fix: 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
JMVL64
Szymon Woźny
Manas Khurana
S.Hale
Mrugesh Mohapatra