Styling not working (only on submit)

Hello everyone.
I have installed CF7 a few days ago and since then I have been trying to understand how to format it but with not much luck… The only thing I did manage to style is the submit… Like so:
.wpcf7-form input.wpcf7-form-control.wpcf7-submit {
background-color: #ff9900;
font-size: 28px;
font-weight: 500;
width:50%;
padding: 15px;
border-radius: 10px;
}

A few things worth mentioning –
1. I am using a child theme
2. My CF7 uses <label> </label> and not <p> </p>

What I would like to do:
1. Name ([text* your-name]) and email ([text* your-email])input field: Have bigger fonts, bigger fields and at 50% each
2. Have all textarea* smaller
3. Center the submit button

And here it is live – https://dpositiveimpact.com/contact-me/

Would greatly appreciate any help on this