Try something like this:

{align: middle, width: 100%}
![](resources/image-name.png)

If that doesn't work, please contact us at hello@leanpub.com for support!

[Update: We've had a report of width: 100% not working, but width=100% working. If you encounter the same issue, we'd really appreciate it if you'd contact us with the details at hello@leanpub.com!]

Did this answer your question?