Background: Their existing site is on Squarespace (version 7.0) which they want to keep. The current template is Project Sprout.
Problem: I want to adjust the header so that the navbar is fixed to the top of the viewport, but that’s not a default option in this template. I’ve tried three different suggested pieces of code to no avail.
Does anyone have experience with this particular template and knows the specific code I need to enter in the Custom CSS field to get that navbar to stay put?