Div tags don’t work

Hello,
The submit putton is not active with this code:
<div class=”edgtf-custom-form”>
[text* your-name placeholder “nombre y apellido”][email* your-email placeholder “e-mail”][text your-subject placeholder "tema del mensaje"][textarea your-message placeholder “texto”]<div><span class=”edgtf-btn-border”></span>[submit “enviar”]</div></div>

However is active when the code bellow is used:
<label> Your Name (required)
[text* your-name] </label>
<label> Your Email (required)
[email* your-email] </label>
<label> Subject
[text your-subject] </label>
<label> Your Message
[textarea your-message] </label>
[submit “Send”]

It seems that div tags which make the layout is better are ignored.
How to solve the problem?
Regs
Jacek

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