Why does my form display differently when copied over Dawn theme?

ehello, I am using this code:

ADRESEAZA O INTREBARE

Adreseaza o intrebare

Nume
Adresa de email
Numarul de telefon
Mesaj
​ Trimite

to display a form on a page and the form looks like in the first picture.
If I copy the HTML to another product, the form does not look the same. I am copying it in the same place, not sure why this is happening. As you can see in picture 2, the box from the e-mail address is disappearing. I can’t explain why.

@Iuliaradu

oh sorry for any issue can you please share store url and issue details what do you want exactly