If you need to block off the top of a staircase or any other place with uneven floors that your baby could fall on, these are the perfect baby gates for the job. (momtricks.com)
We had uneven flooring issues there too thanks to a weird remodel. (theletteredcottage.net)
Non-marking leveler feet can be adjusted for stability on uneven floor surfaces (steel base only). (gusmodern.com)