JSFiddle - React, Tailwind, and code Playground

by Santosh Thakur

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
<div class="container-fluid mt-4">
  <div class="room-1">
    <div class="row">

      <div class="col-2">
        <strong> Room 1 </strong>
      </div>

      <div class="col-5">
        <label for="usr">Adults Above 12 years:</label>
        <div class="input-group mb-3">
          <div class="input-group-prepend">
            <button class="btn btn-outline-primary" type="submit">Sub</button>
          </div>
          <input type="text" class="form-control" placeholder="1">
          <div class="input-group-append">
            <button class="btn btn-outline-primary" type="submit">Add</button>
          </div>
        </div>
      </div>

      <div class="col-5">
        <label for="usr">Child Below 12 years:</label>
        <div class="input-group mb-3">
          <div class="input-group-prepend">
            <button class="btn btn-outline-primary" type="submit">Sub</button>
          </div>
          <input type="text" class="form-control" placeholder="1">
          <div class="input-group-append">
            <button class="btn btn-outline-primary" type="submit">Add</button>
          </div>
        </div>
      </div>

    </div>

    <div class="row">
      <div class="col-2">
        Child
      </div>
      <div class="col">
        <label for="usr">Age of Child</label>
        <div class="input-group mb-3">
          <!-- <input type="text" class="form-control" placeholder="1"> -->
          <select name="cars" class="custom-select">
            <option selected> ( &lt; 1) </option>
            <option value="1">1</option>
            <option value="2">2</option>
           ...

CSS

.room-1 {
  border: 1px solid green;
}

.room-2 {
  border: 1px solid red;
}

.room-3 {
  border: 1px solid blue;
}

.room-4 {
  border: 1px solid yellow;
}