CODEWITHSUNDEEP
mobilecssmedia-queries
Nathan
Nathan

Reputation: 8026

CSS media queries for pixel density: -moz-min-device-pixel-ratio vs. min--moz-device-pixel-ratio

When using CSS media queries for device pixel density, I have seen both -moz-min-device-pixel-ratio and min--moz-device-pixel-ratio.

For example:

@media 
  only screen and (-moz-min-device-pixel-ratio: 1.5) {
  /* styles go here */
}

vs.

@media 
  only screen and (min--moz-device-pixel-ratio: 1.5) {
  /* styles go here*/
}

Which is correct?

Some tutorials/blogs that use the former:

Some tutorials/blogs that use the later, including mozilla.org:

Upvotes: 13

Views: 8713

Answers (2)

Edward
Edward

Reputation: 291

I'm the author of the menacing cloud article referenced above. The device-pixel-ratio listed in my article was incorrect since it was written quite a while ago (iPhone4 launch).

It has been updated to reference the correct Mozilla syntax.

I have no idea why Mozilla chose to go with min--moz-device-pixel-ratio, but that is the official form chosen it seems.

Upvotes: 2

justinavery
justinavery

Reputation: 2596

The second one is correct.

This is from http://www.quirksmode.org/blog/archives/2012/07/vendor_prefixes.html

-webkit-min-device-pixel-ratio: 1.5
min--moz-device-pixel-ratio: 1.5
-o-min-device-pixel-ratio: 3/2

Upvotes: 19

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