JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
  
  <div class="row center-h">
    <div class="node">1</div>
  </div>
  
  <div class="row center-h">
    <div class="node">1</div>
    <div class="node">2</div>
    <div class="node">3</div>
    <div class="node">4</div>
  </div>
  
  <div class="row">
    <div class="node">1</div>
    <div class="node">2</div>
    <div class="node">3</div>
    <div class="node">4</div>
    <div class="node">5</div>
    <div class="node">6</div>
    <div class="node">7</div>
    <div class="node">8</div>
    <div class="node">9</div>
    <div class="node">10</div>
    <div class="node">11</div>
    <div class="node">12</div>
    <div class="node">13</div>
    <div class="node">14</div>
  </div>
  
</div>

CSS

.row{
  display: flex;
}

.row.center-h{
  justify-content: center;
}

/* .column{
  display: flex;
  flex-direction: column;
  align-items: flex-end;
} */

.container{
  max-width: 16em;
  overflow-x: scroll;
  margin-left: 10em;
}

.node{
  padding: 1em 2em;
  border: 1px solid #ddd;
  border-radius: 4px;
  box-shadow: 0px 2px 5px #efefef;
  margin: 1em;
}