JSFiddle - React, Tailwind, and code Playground

HTML

<fieldset>
  <legend>
  Test
  </legend>
</fieldset>

CSS

@namespace url(http://www.w3.org/1999/xhtml);

fieldset {
  display: block;
  margin-inline-start: 2px;
  margin-inline-end: 2px;
  border: groove 2px ThreeDFace;
  padding-block-start: 0.35em;
  padding-inline-end: 0.625em;
  padding-block-end: 0.75em;
  padding-inline-start: 0.625em;
  min-width: min-content;
}

legend {
  padding-inline-start: 2px; padding-inline-end: 2px;
}