Border Bug

Hi,

i have a bug with my label border after updating wordpress.

It used to look like this: https://imgur.com/Rvizelp

After updating it it had no borders at all. They were invisible. It needed to add this code:

#cfc form input, #cfc form textarea {
border: 1px solid lightgrey !important;

}

Then it looked like this: https://imgur.com/QlZ0WOV

Strangely the current border are appearing for a second after reloading. See here: https://imgur.com/mSEpmnu

How to proceed here?

The page I need help with: [log in to see the link]