Improved Tennis HUD and improved the CSS in Tennis

[VijaySamant4368]

PR Description 📜

I improved the Heads Up DIsplay for the score system. I also commented some CSS code, which I think is serving no purpose. Please check the same.
Fixes #3378

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📸

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Thank you soo much for contributing to our repository 💗

[kunjgit]

Thank you @VijaySamant4368 ,for creating the PR and contributing to our GameZone 💗
Review team will review the PR and will reach out to you soon! 😇
Make sure that you have marked all the tasks that you are done with ✅.
Thank you for your patience! 😀

[VijaySamant4368]

Please add the label for GSSoC 2024, and the level of the issue.
Thanks

[kunjgit]

LGTM!

[kunjgit]

Thank you @VijaySamant4368 , for your valuable time and contribution in our GameZone 💗.
It’s our GameZone, so Let’s build this GameZone altogether !!🤝
Hoping to see you soon with another PR again 😇
Wishing you all the best for your journey into Open Source🚀