How can I quickly view CSS properties applied via a class?

While editing HTML in PyCharm, is there a way to quickly view the CSS properties that a CSS class applies to an HTML element? I've found that I can right click on an element and select "Show Applied Styles for Tag", but that only seems to show properties listed in the HTML's style attribute.

For example, if I have a CSS class in a stylesheet:
.my_css_class
{
   color: grey;
}

And an HTML element in a separate file:
<div class="my_css_class">Hello world</div>

How can I easily find out what "my_css_class" is doing to the <div> without navigating away from my HTML file?

I am using PyCharm Professional version 3.4.