[Suggestion] Use different properties than "display:none"

[nkay08]

Some more advanced bots can recognize that fields with display:none should not be filled.
We can achieve something similar to display:none without actually using it.

We recently got a bot submission on our contact form using django-honeypot, which is the reason I'm suggesting the change.

These CSS properties can replace display:none:

        opacity: 0;
        position: absolute;
        top: 0;
        left: 0;
        height: 0;
        width: 0;
        z-index: -1;

Kind regards.

#25