How to implement scrolling vertically when fixed?

All the good time, there is such a markup https://jsfiddle.net/aksyjccb/1/
The question is how to implement scrolling in a fixed block .control-menu, if all the points of li not put in the scope screen.
overflow-y: auto; // not working
July 2nd 19 at 13:11
1 answer
July 2nd 19 at 13:13
Solution
min-height: 100vh replace on just height: 100vh; Otherwise, the unit will stretch further
What a fool I(
Stupid wild.. And I think why it doesn't work then.. Thanks for the help!) - Lavada_Schmeler4 commented on July 2nd 19 at 13:16

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