Update readme
Fix opening comment
Correct Indentation
Correct 0 values

Values of 0 shouldn’t have units specified
Remove useless selectors.

A lot of this will need looking at again - there is so much bloat due
to the overwhelming usage of IDs in selectors for the whole document.
Remove empty rules
Fix 0 unit

Missed one
Add compatible vendor prefixes
Correct ordering
Add fallback backgrounds
Merge pull request #3 from Swadq/develop

merged, thank you! — readme updated, opening comment, indentation, 0 values, useless selector fixes, vendor prefixes, ordering, background fallback. –