Validator w3 report - get some Error

[Nigel_Joe (Joe)]

When I make the HTML Checker on Ready to check - Nu Html Checker (www.online-fabrik.at)
I get some error, how can I fix it?

Screenshot
Preview

Thank you.

[bart (Bartosz Kustra)]

Hey @Nigel_Joe!

I’ve looked at your W3 report and I’ll do my best to help you out :)

1. Element <nav> does not need a role attribute
   We are adding a role attribute to make the structure more accessible to user agents that support ARIA as well as to ensure that user agents that don’t support HTML5 can also understand the structure.

2. The scrolling attribute on the iframe element is obsolete.
   The scrolling attribute used to specify whether or not to display scrollbars in an <iframe>. With HTML5 this attribute is deprecated as we should use CSS for this, but it is still supported by major browsers. I will contact our devs to talk regarding the scrolling attribute :)

3. Attribute wait not allowed on element input
   I’ve contacted devs already regarding this. I’ll let you know as soon as I have more informations!

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Cheers,
Bart

[Nigel_Joe (Joe)]

Hey Bart,

Thanks for your reply, ok then I’m waiting for the next informations

Cheers,
Joe