quickly and almost without thinking
If you have experience the layout similar layout, Yes.
and not tired
I think it still will be tired. Any concentration of attention (especially if there happens to be played kinik) tires.
Or this is impossible to achieve?
To impose, to impose. When you reach the point when you have experience in the layout of most elements, you can do them on autopilot. Of course to think still have, but faster and easier.
it makes no sense and it is better to find a permanent coder to whom to delegate?
If you are willing to devote a lot of time, it's worth. I used and typeset (no kinikov only), thinking in my head about her, and automaticity dialing code layout. But since it is now rare to do, began to blunt at some points.
Another important point is that the tools, some Avocode + emmet + different code snippets will simplify and will accelerate work pretty hard.