WebGL on wordpress

I’m trying to get my game working on wordpress using an iframe and I can’t for the life of me figure out how to make it fit well on the screen without it being either huge with a scroll bar or super small. The game is in portrait mode so maybe that adds to the problem.

I’ve tried setting parameters inside the iframe for height and width with fixed pixel sizes as well as using 100% or 100dh/dv.

I’ve googled for the past 2 days for solutions and this one was the closest I got to what I needed, but it didn’t work. Full Browser Window Unity WebGL - Alex Ocias Blog
See attached image for how it is currently displaying on the webpage.

What am I missing? Why does the iframe get tiny like that even setting height/width

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I’ve used Wordpress before, this looks like a nice plugin: HoweScape Unity3d WebGL – WordPress plugin | WordPress.org

When I’ll have a chance I’ll try it out myself.