>You need to look at the class for the div. Also look at the generated html. That often points you to where the problem is.
>

This is what I have in View Source

    <div class="editor-field">
            <textarea class="textareaDesc" cols="20" id="Description" name="Description" rows="2">
</textarea>
            <span class="field-validation-valid" data-valmsg-for="Description" data-valmsg-replace="true"></span>
        </div>

May be the first class takes precedence? (The class for div?), also, what is cols and rows ?