JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
<div class="trunc">
userrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr</div></div>

CSS

.container {
  display: inline-block;
  white-space: nowrap;
  border: 1px solid black;
  width: 100%;
}
.trunc {
  width: 100%;
  overflow: hidden;
	text-overflow: ellipsis;
	-o-text-overflow: ellipsis;
	white-space: nowrap;
}
.trunc::before,
.trunc::after {
  display: block;
}
.trunc::before {
  content: 'id: [';
}
.trunc::after {
  content: ']';
}