How best to optimize the menu for phones?

Prompt as better it to line up with the phone looks bulky and ugly. Can give good advice?
The menu is standard, using ul and li

Thank you!
June 8th 19 at 16:55
3 answers
June 8th 19 at 16:57
as usual - the box in the upper right corner, pressed - surfaced) Look at one of my projects on the phone
June 8th 19 at 16:59
June 8th 19 at 17:01
Thanks for the replies. The solution of the problem chosen via slideout

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