warning by bitdefender in website

[jajens00]

I get this message on one norwegian web page "lydogbilde.no" when I try to load it and login to my acount. This have never happen before.

Online Threat Prevention
  
We blocked this dangerous page for your protection:
https://css.tevidon.com/
Accessed by: vivaldi.exe
Dangerous pages attempt to install software that can 
harm the device, gather personal information or operate without your consent.

in microsoft edge there is no warning.
I use bitdefender total security.

modedit reformatted, title

[Dr.Flay]

Kaspersky doesn't like it
https://www.virustotal.com/gui/url/1f2838117046ea37c0a6fc3b2b5467374840768729181e142fe35abbb63acde6/detection

Could be this "suspicious" script.
https://unmask.sucuri.net/security-report/?page=www.lydogbilde.no

Maybe you should email the site about it

[Catweazle]

@gwen-dragon , no problem with Windows Defender, also VirusTotal says it's clean (Kaspersky too). Certainly a false positive

Edit Blacklight interrupts the scan in this site, only in this site .
Maybe somthing strange with the page code