a$.$ Include this CSS code in the head section of your html document to test the effects of

data validation:

$$ style $>$

input:valid $\{$

background$-$color: palegreen;

$\}$

input:invalid $\{$

background$-$color: lightpink;

$\}$

b$.$ Every input element must be linked to its label using the for attribute.

c$.$ Every input element should have a name attribute.

d$.$ "region" can be one of the KSA regions $($Mecca$,$ Riyadh, Eastern Region, Asir, Jazan,

Medina, Al$-$Qassim, Tabuk, Ha'il, Najran, Al$-$Jawf, Al$-$Bahah, Northern Borders

Region$).$

e$.$ All fields are required except "website or domain name" and "project description".

f$.$ Phone number must contain only numbers. It must contain at least $10$ digits, at most $14$

digits. You can use HTML pattern attribute: