How can I center embedded content in Canvas HTML/Embedded Content box? I can get the video to embed, but I can't get the editor to save the <CENTER> code I enter. When I first save it, the video embed is centered. But when I refresh the page or visit it later, the centering is gone and when I go into edit mode, the command I thought I had saved in the HTML box is no longer there. In short, beyond the initial embed code, nothing else I enter there is saved.