<div class="myClass">
<form method = "post" name="loginForm" >
<input type="text" name="userName"/>
</form>
<form method = "post" name="signupForm" >
<input type="text" name="userName"/>
</form>
</div>
if this was to be an example html.
<div>(.*?)</div>
So, something like this, anything (even nested tags) between opening and closing div tag