Everything looks good and works fine in my react app dev build, but some css styles aren't being correctly applied to the production build i host on my github pages through gh-pages npm package (through this guide https://github.com/gitname/react-gh-pages)
The problem with mobile version hamburger button. It works like this: it applies .openMenu class to 2 elements (parent div and nav element) to apply some css styles. However menu that is supposed to be hidden on left , is seen and by the look of dev tools css styles for default behaviour aren't being loaded correctly or not switching for some reason. Class is added and changed correctly though. I attached 2 screenshots so its seen how i want it to look like and how it looks and works correctly on my dev version. I also attached CSS snapshot for the elements that have this problem :