safari14 version issue

[JuSeonmi]

hi, I am a UI developer who really wants to apply polyfill to the service. 😀
I confirmed that it applies well up to version 15, but it is a problem in version 14.
In Safari14 version, the data-cqc-* attribute is not created, so the style of :where([cqc~**]) does not seem to be matched and applied properly.
It appears that all declared @container styles are displayed.
Is this working properly? Please confirm.

https://codepen.io/chriscoyier/full/yLzKavz

safari 15

safari 14

[iamallyniam]

I have a similar issue in Safari 14, according to can i use Safari supports the where pseudo class from version 14 onwards, https://caniuse.com/?search=%3Awhere but I keep seeing :where pseudo class not supported in this browser.

[colbat]

Hi, I have the same issue. It seems to be similar to this one: #64 where the check for :where is not supported. For me that happens only on Safari iOS < 14.5.

I just opened a PR with a fix: #82