Abide Validation in Foundation 5

I use Foundation 5. I use abide validation for my input text elements. Problem is with validation of input field in standard mode of validation - i mean “required”. When you fill in input field only space from the keyboard validation process tell us that everything is ok. But is not ok because inputfield is empty (there is only “space sign” in it). How can I easy resolve this problem?

I resolved this issue - you need to use this option: pattern="[a-zA-Z]+"