css3 property of overflow scrollbar makes the content scrollable if you want to make the scroll bar style using css then target the class and use following code to make scrollbar always visible through a custom style.

.class-name::-webkit-scrollbar {
  -webkit-appearance: none;
  width: 7px;
.class-name::-webkit-scrollbar-thumb {
  border-radius: 4px;
  background-color: rgba(0, 0, 0, .5);
  -webkit-box-shadow: 0 0 1px rgba(255, 255, 255, .5);