Joomla insert html code, and he takes it and deletes it in the admin panel

Question

Joomla

<div class='socials'>
    <a href='#'><span class='fa-facebook fa'></span></a>

</div>

Why is this happening?

Answer 1

Because gladiolus.
And more specifically, where do you put it?
And most likely you need some module to insert html.