body  {
  cursor: url('https://blog-static.cnblogs.com/files/lucas--liu/cat6.ico'),auto;

} 
a {
  cursor: url('https://blog-static.cnblogs.com/files/lucas--liu/HelloKittynormalselect.ico'), pointer;
}
/* #back-to-top {
    background-color:#CCCCCC;
    bottom: 0;
    box-shadow: 0 0 6px;
    color: #444444;
    padding: 10px 10px;
    position: fixed;
    right: 50px;
    cursor: pointer;
}
#back-to-bottom {
    background-color:#CCCCCC;
    top: 0;
    box-shadow: 0 0 6px;
    color: #444444;
    padding: 10px 10px;
    position: fixed;
    right: 50px;
    cursor: pointer;
} */