Sometimes the css property value “0” that I set does not appear in the Oxygen css file. I guess that empty values are not printed in the css and the Oxygen dev team check that via empty() function. In PHP, empty(“0”) returns true so that “0” css value may not be shown.
In that case, I should set the “0” value as “0.0” and it is working fine.
I hope this bug will be fixed soon.