JSFiddle - React, Tailwind, and code Playground

HTML

<div class="panel panel-primary fixed-panel">
    <div class="panel-heading">Test</div>
    <div class="panel-body">
        <div class="col-xs-4">
            <form name="myForm">
                <div class="col-xs-6">
                    <label for="startInput">Start:</label><br />
                    <input type="text" id="startInput" class="form-control" name="start">
                </div>
                <div class="col-xs-6">
                    <label for="endInput">End:</label><br />
                    <input type="text" id="endInput" class="form-control" name="end">
                    </div>
            </form>
        </div>
      </div>
  </div>