Sticky elements floating to Left while scrolling

Hello,

I am trying to build a website using Twenty Twenty-Two free theme. I am not a coder and have limited knowledge. I have created a right sidebar using column elements (blocks). Now I want this sidebar sticky. The default class is wp-container-8 for this column, and I mentioned it in custom field elements. But after saving, when I am scrolling down, it is floating left instead of remaining right and overlapping over the content.

Any help is highly appreciated.

Regards,
Sudeep

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