JSFiddle - React, Tailwind, and code Playground

HTML

<div class="block">
  <div class="item">
    
  </div>
  <div class="item">
    
  </div>
  <div class="item">
    
  </div>
  <div class="item">
    
  </div>
</div>

CSS

.block {
  height: 200px;
  overflow-y:scroll;
}

.item {
  display: block;
  height: 60px;
  width: 100%;
  margin-bottom: 30px;
  background-color: green;
}