CSS won’t style timer

I’m using something like this:

[fergcorp_cdt_single date=”15 Aug?2017 1:59″]

and it looks great, but I’m having trouble getting rid of the timer underline.

So, I tried making these changes in CSS:

.fergcorp_countdownTimer_event_time {
border: none;
}

.fergcorp_countdownTimer_event_time {
border-bottom: none;
}

And I tried adding !important as well. No luck.

Any help appreciated!