When coding with internal CSS, everything appears as expected. However, after moving the CSS to an external file, certain properties seem to stop working.
To view the code with the external CSS and identify the issues, check out the following link: https://codepen.io/WittyKnee43/pen/vpGPQj
For a visual representation of how the code should look like with internal CSS, visit this link: https://codepen.io/WittyKnee43/pen/NXNJoV
It seems that some adjustments need to be made to ensure the CSS functions correctly. Review the code and suggest any necessary changes.