Specific Problem
Both the header .container
and search bar container had their z-index
set high and in the latter's case, an important!
set. Removing z-index: 10000;
from them fixes the problem.
Overall Problem
User is using a theme someone created that uses terrible CSS practices and could use an overhaul to remove all the float
and important!
elements, but that's up to the user and obviously for another day, another question.