hover on scrollbar code example

Example 1: how to make scroller show only on hover of container

.scrollbox {
  width: 100px;
  height: 100px;
  overflow: auto;
  visibility: hidden;
}

.scrollbox-content,
.scrollbox:hover,
.scrollbox:focus {
  visibility: visible;
}

.scrollbox_delayed {
  transition: visibility 0.2s;
}

.scrollbox_delayed:hover {
  transition: visibility 0s 0.2s;
}

Example 2: hover show scrollbar css

div {
  height: 100px;
  width: 50%;
  margin: 0 auto;
  overflow: hidden;
}

div:hover {
  overflow-y: scroll;
}