Rules - value does not fit

[flatsiedatsie]

In Firefox, as can be seen in the bottom left of this screenshot, the common value '100' does not fit:

Could the item simply be made a little wider? Responsive even?

Perhaps some space could be made by changing the way the > dropdown works? Currently it's pure html, but it might be "pimped"? The current version is a little.. odd. It's a little feast of arrows right now, where the checkmark feels like another downward arrow:

As an aside, if the items would be responsive, I imagine on a big screen the > could be replaced with the actual words bigger than if there was enough space available.