一个好看的滚动条 scollar bar

/* Style of scrollbar*/
::-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(255,255,255,0.8); 
    -webkit-box-shadow: inset 0 0 6px rgba(255,255,255,0.5); 
}
::-webkit-scrollbar-thumb:window-inactive {
  background: rgba(255,255,255,0.4); 
}