Embedded PowerBi Report in Sharepoint creates black border

Hi j274 ,

Please refer the following links which has the similar problem as yours to try to fix it:

How do you get rid of the grey border with the report visuals with power bi embedded?

<style>
  iframe {  border: none; }
</style>

Setting the iframe background for embedded reports (default gray color is terrible)

let embedConfig = {
    ...
    settings: {
	background: models.BackgroundType.Transparent
    }
};

Best Regards