Fixed position of an element in a block?

Question

css

SSMaker.ru/3190cab2
How to make the "Design Layout Concept" be fixed when scrolling this block?
I tried to give it position: fixed but it was fixed throughout the html and not in this block, which I need.

Answer 1

position: absolute?
but an example is better, of course, little is clear from the screen

Answer 2

position: absolute

Answer 3

In general, sometime in the future this will be done via position: sticky( caniuse.com/#search=sticky) , but for now, try polyfills:
https://github.com/filamentgroup/fixed-sticky
https://github.com/wilddeer/ stickyfill