The group block adds some inline styles that aren't validated properly via W3C validator

[MaitreArt]

Description

When I add the core group block there are inline styles added to its class, such as:

<style>.wp-container-6222132642da3 .alignleft { float: left; margin-right: 2em; }.wp-container-6222132642da3 .alignright { float: right; margin-left: 2em; }</style>↩
<style>.wp-container-62221326443b4 .alignleft { float: left; margin-right: 2em; }.wp-container-62221326443b4 .alignright { float: right; margin-left: 2em; }</style>↩
<style>.wp-container-62221326449f2 .alignleft { float: left; margin-right: 2em; }.wp-container-62221326449f2 .alignright { float: right; margin-left: 2em; }</style>

And when we check it through https://validator.w3.org/ we have errors:
Element style not allowed as child of element body in this context. (Suppressing further errors from this subtree.)

Step-by-step reproduction instructions

1. Go to the page or post
2. Add group block, update the page or post
3. Check it through https://validator.w3.org/

Screenshots, screen recording, code snippet

Environment info

• WordPress version 5.9.1, from Twenty Twenty Eighteen (didn't check older version) to Twenty Twenty One themes
• All plugins are disabled

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes

[MaitreArt]

Any updates??? The same issues happen with a Columns block

[skorasaurus]

Hi,

Thanks for reporting;
This has been discussed and/or requested in #38917 . Feel free to add your reaction and follow its progress in the issue.