Add the following CSS snippet in the header section of webpage.
<STYLE>/* Let's get this party started */
::-webkit-scrollbar { width: 12px;}
/* Track */::-webkit-scrollbar-track
{ -webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.3);
-webkit-border-radius: 10px; border-radius: 10px;
}
/* Handle */
::-webkit-scrollbar-thumb
{ -webkit-border-radius: 10px;
border-radius: 10px; background: rgba(255,0,0,0.8);
-webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.5); }
::-webkit-scrollbar-thumb:window-inactive
{ background: rgba(255,0,0,0.4); }
</STYLE>
