::-webkit-scrollbar {width: 8px; height:8px;}
::-webkit-scrollbar-button {display:none;}
::-webkit-scrollbar-track {background:none;}
::-webkit-scrollbar-thumb {border-radius:50px; background:#c2c2c2;}
::-webkit-scrollbar-thumb:hover {background:#404040;}
https://stackoverflow.com/questions/6165472/custom-css-scrollbar-for-firefox