Nesting two levels == unwanted low opacity on active element

[imakewebthings]

This is a bug in the theme CSS. Given this HTML:

<section class="slide">
  <div class="slide">
    <h2>First Level</h2>
    <p class="slide">Second Level 1</p>
    <p class="slide">Second Level 2</p>
    <p class="slide">Second Level 3</p>
  </div>
</section>

"First Level" comes in fine. On moving to "Second Level 1" the text for "First Level" is lowered in opacity as expected, but so are all of its Second Level children even though they are active.

I suspect all that needs to happen is that any nested slides with the deck-child-current class need their opacity set to 1.0, overriding the 0.4 opacity on before/prev nested slides.