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iframe code
<div style="width: 100%;"><div style="position: relative; padding-bottom: 56.25%; padding-top: 0; height: 0;"><iframe title="ILLUSTRATION CORP ONE PAGER" frameborder="0" width="1200px" height="675px...
Rise is going to strip out a lot of that, especially the div, you'll need to simplify it like:
<iframe src="https://view.genial.ly/64f1087595931d0011677930"></iframe>