Pop out chatbox question

quick question so in finding the popout chatbox from previous link here : https://help.forumotion.com/t130809-popout-chatbox

i find the chatbox works perfectly only could you give me the piece of the code that changes the tab pop out thing (forgot how to do it  ) so i can make the tab stylish 

as well as in the chatbox sticky post could you specify for me which part of the sound notifications part goes in CSS java and or html because you werent very clear on which one for that

To style the button, it is the CSS part.

Code:

   /*Chatbox*/
    #chatButton{
    box-shadow:0px 10px 6px rgba(255,255,255, 0.2) inset, 0px -10px 6px rgba(0,0,0, 0.2) inset;
    padding:10px 20px 10px 20px;
    background-color:#257;
    border:1px solid #146;
    font-weight:bold;
    font-size:10px;
    z-index:999;
    color:#fff;
    }
    #chatButton:hover{
    cursor:pointer;
    color:#ff8;
    background-color:#368;
    }
    #chatBox iframe{
    z-index:999;
    border:none;
    height:50%;
    width:65%;
    }

what about the chatbox sticcky post you all posted

could you be a bit specific about where the sound notifications go 
i believe its Java but i wanna be sure before i got and do it