image - Should I use both no-webp and no-jpeg2000 for fallbacks on Modernizr?

Question

I'm unsure of whether I need to use both no-webp and no-jpeg2000, like this:

.no-webp .no-jpeg2000 .coverart.pli {
    background-image: url('../img/coupe.jpg');
}

or if it is sufficient to only use one as a fallback, i.e.:

.no-webp .coverart.pli {
    background-image: url('../img/coupe.jpg');
}

Thanks in advance!

question from:https://stackoverflow.com/questions/65942817/should-i-use-both-no-webp-and-no-jpeg2000-for-fallbacks-on-modernizr

Answer 1

Waitting for answers