Button and text in Revolution Slider

Hi,

I would like to create transparent text and buttons like this page http://quickchat.eu .
I added the this code under the ‘advanced editor’ under ‘Idle’:

.yourbuttton {padding: 10px;
border: 2px solid #FFF;
background: rgba(0, 0, 0, 0);
-webkit-border-radius: 10px;
-moz-border-radius: 10px;
-o-border-radius: 10px;
border-radius: 10px;
}

But it’s not the same button and text transparency like on the website. Can you help me out which code I need to create that button and text?

Thanks