JSFiddle - React, Tailwind, and code Playground

HTML

<div class="input-container">
  <input type="text" name="fName" class="inpField" size="20" value="First Name" />
  <span class="input-addon">*</span>
</div>

CSS

.input-container {
  position: relative;
  display: inline-block;
}

.input-addon {
  position: absolute;
  right: 10px;
  top: 5px;
  color: red;
}