div::-webkit-scrollbar-thumb {
    background-color: rgb(90, 90, 90);
    border: 4px solid transparent;
    border-radius: 8px;
    background-clip: padding-box;  
}

div::-webkit-scrollbar {
    width: 16px;
}
  
xul {
    overflow-y: scroll;
    margin: 0;
    padding: 0;
    width: 350px;
    max-height: 300px;
    background-color: lime;
   border-radius: 8px;
}

xli {
    list-style-type: none;
    padding: 13px;
}