::-webkit-scrollbar {
width: 8px;
height: 10px;
}
::-webkit-scrollbar-thumb {
background-color: rgba(0,0,0,.2);
border-radius: 6px;
cursor: pointer;
}
::-webkit-scrollbar-track {
background-color: #ddd;
border-radius: 6px;
}原文：https://blog.51cto.com/14284354/2450857