After HTML5/CSS3 learn JavaScript or Responsive layout?

Question

css

Learned the basics of HTML5/CSS3, made some simple fixed-layout layouts.
Now I can’t decide what to learn next:
1. JavaScript
2. Learn to type adaptively
Everywhere you need both, but what to learn first?
Thanks

Answer 1

Well, it is logical that the layout needs to be taught to the end, which means that the adaptive should be disassembled!
And then climb into js.

Answer 2

item 2. because JS is always slower than CSS3.
Everything that is needed to render the blocks must be done in HTML/CSS3.