How To Make The Left Div Scrollable With Space Bar Or Down Arrow Without Having To Click First?

When you navigate on a page like this one, you can immediately use SPACE BAR or UP/DOWN ARROW or PG UP/DOWN to scroll the page, without having to click on the background of the pag

Solution 1:

Not sure if I got you right. Here's a Codepen with fixed header and fixed map. This is achieved by using position: fixed on the header and map.