Generate HTML, CSS, and JavaScript Code

HTML

<div class="parent">
  <div class="item">
    Hello1
  </div>
  <div class="item">
    Hello2
  </div>
  <div class="item">
    Hello3
  </div>
  <div class="item">
    Hello4
  </div>
  <div class="item">
    Hello5
  </div>
  <div class="item">
    Hello6
  </div>
</div>

CSS

.parent {
  width: 200px;
  border: 2px solid black;
  display: flex;
  overflow: hidden
}

.item {
  margin: 5px;
  padding: 2px;
  border: 1px solid black;
}