Add hover effect to send button in contact us section

[AnandSY]

I want to modify send button a little bit and add a hover effect on it.
Please assign it to me under hacktoberfest.

[soumali28]

@AnandSY This is already done , one who made the contact us actually did it just forgot to add the class name which I fixed it. But you can join our discord and suggest custom issues and we'll create it for you.