node-api class names

The event.module installed on my site produces the following code:

<div class="event-nodeapi"><div class="flexinode-1-start"><label>Start: </label>05/01/2005 - 3:00pm</div></div>
<div class="event-nodeapi"><div class="flexinode-1-end"><label>End: </label>05/01/2005 - 4:00pm</div></div>
<div class="event-nodeapi"><div class="flexinode-1-end"><label>Timezone: </label>-18000</div></div>

I'd like to hide the timezone value with CSS, but can't do so because it has the same class as the event end time.