I am trying to embed my webgl build into a wordpress site.
I tried:

1. uploading my index.html in the media library with wp-admin, then copying the url and embedding directly into the page. The result was a blank page.
2. uploading the build as a zip file into media library wp-admin, then copying the url and embedding directly into the page. The result was a prompt to download the zip.
3. using iframe to embed. I hosted it on simmer.io and copied the embed code, before pasting it on wp-admin>pages.

<iframe src="https://i.simmer.io/@Lyra123/lego" style="width:960px;height:600px"></iframe>

Unfortunately, the page does not seem to register it as code. When I previewed the site, it simply displayed my embed code as text.

What shall I try next? Thank you.