Hi, I just starting using your plugin, I like it a lot. But the snippet for the 404 template places a class that start with a number:
This is invalid CSS and is not recognized when I try to style it. Basically you can't start a class or ID with a number, first character needs to be a letter, underscore or dash, the rest doesn't matter.
I corrected the frontend.php file with the class of "suggest-404" and will appreciate if you update this for next version so I don't loose the change. If you want I could send you the corrected file via email.