Wordpress embed too much surrounding white space

Hi,

I’ve created my first chart. A sunburst and I’m over the moon with it. When I share it and choose embed, I’ve transferred successfully the frame code into my wordpress post.

My question, if anyone can help please, is that the chart has a lot of unnecessary white space surrounding it. Is there a setting within the code that I can change to reduce the surrounding white space. Essentially to create a closer crop of the chart?

Here is the link to my chart.

https://plot.ly/~nevparker/7/

Thanks in advance