Change Submit button Color because both the background and the button are yellow

[ghost]

🛠️ Fixes Issue

👨‍💻 Changes proposed

✔️ Check List (Check all the applicable boxes)

• [x] My code follows the code style of this project.
• [x] This PR does not contain plagiarized content.
• [x] The title of my pull request is a short description of the requested changes.

📄 Note to reviewers

📷 Screenshots

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