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Header menu misalignment that appeared after latest update of Google Chrome could be fixed using code from this article 

https://edge.ticksy.com/article/11744

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Missing style sheet error when installing the theme?

This is the common issue when installing a theme, this error message does not mean that the theme is broken. 

It means that the files are not uploaded correctly, and there is an easy fix for it described in this article.

https://help.market.envato.com/hc/en-us/articles/202821510?_ga=1.12521394.74287877.1471284950