Frequency is a web design studio based in Cork, Ireland. We specialise in building mobile friendly, responsive websites for small to medium businesses and individuals.

from the blog

Winter is Coming - for mobile-unfriendly websites!

Please forgive the cheesy, Game of Thrones reference but I thought it was a better option than the currently trending...

Read more
@nifootball Or this one: formvalidation.io as @willowlights said they are not CMS-specific so you can use any script that you like.