Hi,
No way to make it fullwidth, the only thing I can do is increase its width
Add to Design > Custom CSS
div#block-yui_3_17_2_1_1674657316389_2960 {
width: 100% !important;
}
div#block-yui_3_17_2_1_1674241498182_131440 {
width: 100%;
}
I know this is an old thread but thought I would share what I found anyway. THere's a site called Embed Notion that can be found HERE that allows you to embed Notion pages. There's a free version and a paid version. Static pages will work well with the free version, but if you want to do something more dynamic you'll have to go with the paid version. I was looking at using Notion as a forum of sorts and it's a pain in the butt to update the code all the time so would have to do paid if I went that route.