Quantity button is far too wide

Hey guys,

On the payment page of my wordpress site the quantity buttons are far too wide and are overlapping with the cart totals.

This is what it looks like:

https://s13.postimg.org/jcznwjvw7/Screen_Shot_2016_09_16_at_17_09_44.png

I don’t know how to fix it, and I’m afraid it’s going to start affecting conversion. Anyone got any ideas?

Thanks, Alex.