mdn / mdn/browser-compat-data

`flex-start` and `flex-end` - No support data for these values

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#30,410 2 comments 0 reactions 1 assignee View on GitHub

@Elchi3 is already working on this.

Since Sep 3, 2026.

browser:multiple data:css p2
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Description

What type of issue is this?

Missing compatibility data

What information was incorrect, unhelpful, or incomplete?

I expected to find support data for the flex-start and flex-end CSS alignment values.

What browsers does this problem apply to, if applicable?

No response

What did you expect to see?

Perhaps keys such as:

css.properties.align-items.flex-end
css.properties.align-items.flex-start
css.properties.align-self.flex-end
css.properties.align-self.flex-start
css.properties.justify-items.flex-end
css.properties.justify-items.flex-start
css.properties.justify-self.flex-end
css.properties.justify-self.flex-start

There might be others. I'm not sure of every place where flex-start and -end might be needed.

Did you test this? If so, how?

I did a quick check with CSS.supports("align-items: flex-start") to confirm that it works in at least one browser (Firefox), but I'd expect the Collector to find and populate this data.

Can you link to any release notes, bugs, pull requests, or MDN pages related to this?

Specs:

Do you have anything more you want to share?

No response

MDN URL

No response

MDN metadata

No response

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