XF 1.3 Making Notice Containers Responsive In Threads?


I'm implementing an image as a notice with the following code:

<img src="http//www.image.png" style="display:block;width=100%"/>
And it works perfectly on my main board:

Screen Shot 2014-06-25 at 12.45.46 AM.png

However, in threads it appears like this:

Screen Shot 2014-06-25 at 12.43.51 AM.png

How can I get it to have the background wrap around the image in threads instead of showing all that extra space?

I could center the image but I'd rather just remove the blue background all together.

Thank you.