I'm just starting to get more in CSS, and the initial experiments were really good! I find my channel with popups and CSS styles, etc.! However, I want to slightly limit the boundaries of what I know ...
I am trying to create a stylized DIV (no problem) that is rectangular, but has an arrow pointing to an icon in the navigation bar, see the image below, which includes the frame border and where the DIV itself can change in height (although the arrow always remains the same height / width).

Can someone point me in the right direction - or am I trying to do more than is possible?
Thanks in advance.
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