Error message with no line-height

Hi!
This is a great plugin, I’ve used it on several web pages and it works great. The thing is that I’ve noticed lately that before introducing the Instagram code (right after installing the plugin and using its shortcode in a footer widget, for example), the message on the front (the one that indicates that you should enter an access token to show the feed) end has no line height, so it’s not showing correctly. I’ve checked the code and it looks like is due to the 0 value assigned to the sbi-images class line-height attribute.

This was not happening before.

Thanks!