[fdchn2016]

You need to learn CSS just the way you would approach a learning another programming language. From scratch - without assumptions and short cut solutions you get from Googling. Understanding stuff like block, inline block and positioning and go from there. Take a month's equivalent out and spending time learning it.

Javascript too can be an extremely confusing language for those who come from typed systems.

Then comes the DOM.

Then there is the communication system - AJAX, websockets etc.

Finally there is understanding the browser dev tools. As the tooling has accumulated understanding how to use it and internalize everything will take atleast 2 - 3 days.

If you don't take time to learn these 4 systems independently, when they're all mashed up as in a web application, you will struggle .