JSFiddle - React, Tailwind, and code Playground

HTML

<label for="email">Confirm Email</label>
        <input type="text" id="email" /><br/>
<label for="firstname">First Name</label>
        <input type="text" id="firstname" /><br/>
        <label for="lastname">Last Name</label>
        <input type="text" id="lastname" /><br/>
        <label for="company">Company</label>
        <input type="text" id="company" /><br/>

CSS

label.hover  {
  background-color: #eee;
}

JavaScript

$('input').hover(
      function(){
        $(this).prev().addClass('hover');
      },
      function(){
        $(this).prev().removeClass('hover');
      }
    );