Mobile First landing page with SASS architecture. Webpack.

Hi there!

Any comments on how to improve my code are welcome.

Questions:

1. My layout is shifting when the page loads. This is the issue with webpack config and loading styles into a javascript file. I tried injecting it into the body element instead of the head and using MiniCssExtractPlugin. With no success. If anyone has any idea how to fix it, I will appreciate any help. This shifting is very bad for the UX experience and causes CLS to be 0.318 which is bad as well.
2. I would appreciate some good resources about accessibility. I would like my code to be more available to everyone but I am getting a bit lost reading docs about it.

Thank you!