How to Add a Second Scrollbar for Ur Posts

- Dashboard > Design > Edit HTML 
- Find this code :

body {

- Then copy code below here n paste it AFTER code that u find just now :

 ::-webkit-scrollbar {width:14;height:auto;background-color:#FFFAF5;border:0px dashed #BC8F8F;border-bottom:none;}
::-webkit-scrollbar-corner { background:#666;border:0px dashed #F0DFD5;border-bottom:none; }
::-webkit-scrollbar-button:vertical {height:2px;display:block;}
::-webkit-scrollbar-thumb:vertical {background:#666; -webkit-border-radius: 1ex;}
::-webkit-scrollbar:vertical {border:0px dashed #666;}

RED - u cn change as u like buddy . (size) 
BLUE - colour of border .
GREEN - u can change solid /dashed/ dotted