Checkboxes displayed as block instead of inline

Hi, no matter what I do – the checkbox list is showing all items in a separate lines. I have even created a specific id and added a custom CSS to make the display property “inline” but it is still being shown as block, how to fix this?

https://i.imgur.com/k6vfJDL.png

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