Span tags removed, even when user style is applied

Sitecake 2.4.5 removes elements from within

as soon as the editor loads, even when CSS selectors are defined as descendants:
.sc-content p span.myClass{…}

changes

xyz

to

xyz

sorry-- trying HTML again:

<p><span class="myclass">xyz</span><p>

changes to

<p>xyz</p>

Sitecake doesn’t recognize span within <p> tag. Only supported inline elements are <strong>, <em> and <a>.

thanks!
I’m able to change all my SPANs to EMs (but still need a class applied to the EM element). That also gets stripped out when editing (even though I have defined that class as a descendant of its parent).

You have to define class on <p> element and than style <em>'s via <p>
e.g

.sc-content p.some-class em {
  /*your style here*/
}