Just add the class .form to your form and take a break.
<textarea name="mytextarea" data-fc-modules="wysiwyg" required>This is the content of the <strong>textarea</strong></textarea>
Text that will be shown on focus editor
DEFAULT: Select some text to get some formatting options.
Boolean to activate or desactivate the fulscreen option
DEFAULT: True
Html Text for the action button to activate fullscreen
DEFAULT: FULLSCREEN
Html Text for the action button to activate fullscreen
DEFAULT: MINIMIZE
Boolean to activate or desactivate the html editor option
DEFAULT: True
Html Text for the action button to activate the Visual editor
DEFAULT: VISUAL
Html Text for the action button to activate the HTML editor
DEFAULT: HTML"
List separated by coma and ordered of the format options. The posible values are:
DEFAULT: bold,italic,underline,insertunorderedlist,createlink