Hi there, I just wanted to know whether is following code is valid or not? Creating an element for the block modifier i.e. in this case "block--mod" is a modifier for the "block" block. Is it allowed to create a nested element with this pattern: "block--mod__elm". I am quite new to BEM and trying to understand it.
<div class="block block--mod">
<div class="block__elm block--mod__elm">
</div>