.ex1 {
    background-color: lightblue;
    width: 110px;
    height: 110px;
    overflow: scroll;
}

.ex2 {
    background-color: lightblue;
    width: 110px;
    height: 110px;
    overflow: hidden;
}

.ex3 
{
    width: auto;
    height: 350px;
    overflow: auto;
}
.ex3:hover {
     overflow: auto;
     padding-right: 1px;
}

.ex4 {
    background-color: lightblue;
    width: 110px;
    height: 110px;
    overflow: visible;
}

/* width */
::-webkit-scrollbar {
    width: 10px;
}

/* Track */
::-webkit-scrollbar-track {
    background: #f1f1f1; 
}
 
/* Handle */
::-webkit-scrollbar-thumb {
    background: #ef5861; 
}

/* Handle on hover */
::-webkit-scrollbar-thumb:hover {
    background: #f13742; 
}