From your docs, I realize that you don't have any documentation on how to simply embed a google map by just getting the embed code from the map and pasting it into your html. Instead you posted a very technical method which I find quite baffling why you would opt for that method instead?
I did however, tried to embed a google map the easiest way and what I noticed is that a div .fluid-width-video-wrapper was created and padding-top: 400px; was giving to it making the map very tall. After searching the styles.css file for it, I found nothing so I re-created it in custom.css and reassigned a padding of 0 !important; and height of 500px; and I had a working map.
<iframe src="https://www.google.com/maps/embed?pb=!1m18!1m12!1m3!1d3970.8758862686095!2d-0.18530028523393915!3d5.58535699595063!2m3!1f0!2f0!3f0!3m2!1i1024!2i768!4f13.1!3m3!1m2!1s0xfdf9af4620ee00b%3A0x7c232f1b19c4023c!2sAdinkra+Heights!5e0!3m2!1sen!2sgh!4v1522148522919" width="100%" height="400" frameborder="0" style="border:0" allowfullscreen=""></iframe>
