Changed the order of appearance of padding, margin and border

[RemanthManyam]

Because

The order of appearance of padding, margin and border is in order p-> m -> b which has now been changed to p -> b -> m. This was done to remove any confusions that may occur while reading those definitions as there is a chance of mix up

This PR

Small change

Issue

Closes #27947

Additional Information

Pull Request Requirements

• I have thoroughly read and understand The Odin Project curriculum contributing guide
• The title of this PR follows the location of change: brief description of change format, e.g. Intro to HTML and CSS lesson: Fix link text
• The Because section summarizes the reason for this PR
• The This PR section has a bullet point list describing the changes in this PR
• If this PR addresses an open issue, it is linked in the Issue section
• If any lesson files are included in this PR, they have been previewed with the Markdown preview tool to ensure it is formatted correctly
• If any lesson files are included in this PR, they follow the Layout Style Guide

[MaoShizhong]

Thanks for contributing, and congrats on your first PR here!