Improve UI of contact form

[Adhetya]

Describe the bug
A clear and concise description of what the bug is.
UI of contact form is not looking very good

To Reproduce
Steps to reproduce the behavior:

1. Go to website
2. Click on contact
3. See form

Expected behavior
A clear and concise description of what you expected to happen.
UI can be made better with font change and different color for button

Screenshots
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I am GSSOC 22 contributor. Please assign this issue to me.

[github-actions]

Hi 😄, @Adhetya Thanks for creating an issue at FunwithPhysics. We request you to follow the contributing guidelines.

[Amit366]

@Adhetya what font changes and color change would u do. Like there is only a single button and font is also appropriate.

[Adhetya]

@Amit366, change button color, font does not match with rest of the website, reduce border-radius of form, change background color.

[Amit366]

@Adhetya u can work but it must look better than the current one.