Remove Underlined Link on Button

The text portion of my linked buttons is underlined when the cursor is over the button. (The button in the header doesn't do this, but all the other do). How do I remove that feature? I couldn't find a "link underline" option for buttons. I'm using the Beaver Builder page editor, so it might be related to that, but I'm not seeing an option there either. If its not a Dynamik issue, then I'll check with the BB folks...

Here's the website -
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