[megous]

You missed the point.

Would you copy paste around:

<form class="asd fasdf e4rwe sfdg sdfgbbv cxvbxcs asdf asdf wer wer gfdghdfgh fgh">

20x around your static website and keep it updated manually when someone "from design" wants to change the "form" look?

Or would you just <form class="classic-form"> and describe the style of that class of form in a single place?

I know what I'd do. :)