For someone would like to create something like this, where there is a Map in the background and above a Contact Form/Content, here is how.
First of all, I am using Snazzymaps, here I receive an Iframe/embed.
Add this using the "Media -> Add Multimedia" Feature, after this I create a row and add this as background.
This way it shows as an background, so you can add anything above it. Also for the gradient at the top I use the native "Dividers" from Uncode.
(You could play with css or build-in features, like off grid, but this is less hassle)