JSFiddle - React, Tailwind, and code Playground

HTML

<div class="btn btn-secondary">
  <div class="tag-box">
    <span class="tag">Tag 1</span>
    <span class="tag">Tag 2123132132131231221</span>
    <span class="tag">Tag 3</span>
    <span class="tag">Tag 4</span>
    <span class="tag">Tag 5</span>
  </div>
</div>

CSS

.tag-box {
    display: block;
    border: 1px solid;
    max-width: 140px;
    padding: 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tag-box .tag {
    display: inline;
    overflow: hidden;
    text-overflow: ellipsis;
}