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HTML

              
                <head>
  <!-- Required meta tags -->
  <meta charset="utf-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no" />

  <!-- Bootstrap CSS -->
  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous" />

  <title>Bootstrap Form Tutorial</title>
</head>

<body class="container bg-light">
  <!-- Start Header form -->
  <div class="text-center pt-5">
    <img src="https://i.ibb.co/8cDgdFX/Logo.png" alt="network-logo" width="72" height="72" />
    <h2>Meeting Room Booking Form</h2>
    <p>
      Below is an example form built entirely with Bootstrap's form controls.
    </p>
  </div>
  <!-- End Header form -->

  <!-- Start Card -->
  <div class="card">
    <!-- Start Card Body -->
    <div class="card-body">
      <!-- Start Form -->
      <form id="bookingForm" action="#" method="" class="needs-validation" novalidate autocomplete="off">
        <!-- Start Input Name -->
        <div class="form-group">
          <label for="inputName">Name</label>
          <input type="text" class="form-control" id="inputName" name="name" placeholder="Your name" required />
          <small class="form-text text-muted">Please fill your name</small>
        </div>
        <!-- End Input Name -->

        <!-- Start Input Email -->
        <div class="form-group">
          <label for="inputEmail">Email</label>
          <input type="email" class="form-control" id="inputEmail" name="email" placeholder="Enter email" pattern="[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,}$" required />
          <small class="form-text text-muted">We'll never share your email with anyone else.</small>
        </div>
        <!-- End Input Email -->

        <!-- Start Input Telephone -->
        <div class="form-group">
          <label for="inputPhone">Phone</label>
          <input type="tel" class="form-control" id="inputPhone" name="phone" placeholder="099xxxxxxx" pattern="\d{3}\d{3}\d{4}" required />
          <small class="form-text text-muted">We'll never share your phone number with anyone else.</small>
        </div>
        <!-- End Input Telephone -->

        <!-- Start Input Date , Start Time and End Time -->
        <div class="form-row">
          <!-- Start Input Date -->
          <div class="form-group col-md-4">
            <label for="inputDate">Date</label>
            <input type="date" class="form-control" id="inputDate" name="date" required />
            <small class="form-text text-muted">Please choose date and time for meeting.</small>
          </div>
          <!-- End Input Date -->

          <!-- Start Input Start Time -->
          <div class="form-group col-md-4">
            <label>Start Time</label>
            <div class="d-flex flex-row justify-content-between align-items-center">
              <select class="form-control mr-1" id="inputStartTimeHour" name="startHour" required>
                <option value="" disabled selected>Hour</option>
                <option value="08">08</option>
                <option value="09">09</option>
                <option value="10">10</option>
                <option value="11">11</option>
                <option value="12">12</option>
                <option value="13">13</option>
                <option value="14">14</option>
                <option value="15">15</option>
              </select>
              <div class="pl-1 pr-2">:</div>
              <select class="form-control" id="inputStartTimeMinute" name="startMinute" required>
                <option value="" disabled selected>Min</option>
                <option value="00">00</option>
                <option value="00">30</option>
              </select>
            </div>
          </div>
          <!-- End Input Start Time -->

          <!-- Start Input End Time -->
          <div class="form-group col-md-4">
            <label>End Time</label>
            <div class="d-flex flex-row justify-content-between align-items-center">
              <select class="form-control mr-1" id="inputEndTimeHour" name="endHour" required>
                <option value="" disabled selected>Hour</option>
                <option value="09">09</option>
                <option value="10">10</option>
                <option value="11">11</option>
                <option value="12">12</option>
                <option value="13">13</option>
                <option value="14">14</option>
                <option value="15">15</option>
                <option value="16">16</option>
              </select>
              <div class="pl-1 pr-2">:</div>
              <select class="form-control" id="inputEndTimeMinute" name="endMinute" required>
                <option value="" disabled selected>Min</option>
                <option value="00">00</option>
                <option value="00">30</option>
              </select>
            </div>
          </div>
          <!-- End Input End Time -->
        </div>
        <!-- End Input Date , Start Time and End Time -->

        <!-- Start Check Room Type -->
        <div class="form-group">
          <legend class="col-form-label pt-0">Choose a Room</legend>
          <div class="form-check form-check-inline">
            <input type="radio" class="form-check-input" id="inlineRadioType1" name="roomType" value="type1" required />
            <label class="form-check-label" for="inlineRadioType1">Room 1 (10 People)</label>
          </div>
          <div class="form-check form-check-inline">
            <input type="radio" class="form-check-input" id="inlineRadioType2" name="roomType" value="type2" required />
            <label class="form-check-label" for="inlineRadioType2">Room 2 (20 People)</label>
          </div>
          <div class="form-check form-check-inline">
            <input type="radio" class="form-check-input" id="inlineRadioType3" name="roomType" value="type3" required />
            <label class="form-check-label" for="inlineRadioType3">Room 3 (30 People)</label>
          </div>
          <div class="form-check form-check-inline">
            <input type="radio" class="form-check-input" id="inlineRadioType4" name="roomType" value="type4" required />
            <label class="form-check-label" for="inlineRadioType4">Room 4 (40 People)</label>
          </div>
        </div>
        <!-- End Check Room Type -->

        <hr />

        <!-- Start Check Snack Type -->
        <div class="form-row">
          <legend class="col-form-label pb-3">Snack and Drink</legend>
          <div class="row px-1">
            <div class="form-group col-lg-2 col-md-3 col-sm-4 col-6">
              <img src="https://i.ibb.co/k4tBpTp/snack-set-1.jpg" alt="snack-box-set-1" class="img-thumbnail" />
              <br />
              <label for=" inputSnack1">Sandwich Set 1</label>
              <input type="number" class="form-control" id="inputSnack1" name="snack1" min="0" max="40" />
              <small class="form-text text-muted">Crabstick Sandwich.</small>
            </div>
            <div class="form-group col-lg-2 col-md-3 col-sm-4 col-6">
              <img src="https://i.ibb.co/DW0cv1s/snack-set-2.jpg" alt="snack-box-set-2" class="img-thumbnail" />
              <br />
              <label for="inputSnack2">Sandwich Set 2</label>
              <input type="number" class="form-control" id="inputSnack2" name="snack2" min="0" max="40" />
              <small class="form-text text-muted">Tuna Sandwich.</small>
            </div>
            <div class="form-group col-lg-2 col-md-3 col-sm-4 col-6">
              <img src="https://i.ibb.co/YdZF2Q8/snack-set-3.jpg" alt="snack-box-set-3" class="img-thumbnail" />
              <br />
              <label for="inputSnack3">Sandwich Set 3</label>
              <input type="number" class="form-control" id="inputSnack3" name="snack3" min="0" max="40" />
              <small class="form-text text-muted">Crab Roll Sandwich.</small>
            </div>
            <div class="form-group col-lg-2 col-md-3 col-sm-4 col-6">
              <img src="https://i.ibb.co/6mZ2zb0/snack-set-4.jpg" alt="snack-box-set-4" class="img-thumbnail" />
              <br />
              <label for="inputSnack4">Sandwich Set 4</label>
              <input type="number" class="form-control" id="inputSnack4" name="snack4" min="0" max="40" />
              <small class="form-text text-muted">Tuna Sandwich.</small>
            </div>
            <div class="form-group col-lg-2 col-md-3 col-sm-4 col-6">
              <img src="https://i.ibb.co/1rsRBD1/snack-set-5.jpg" alt="snack-box-set-5" class="img-thumbnail" />
              <br />
              <label for="inputSnack5">Sandwich Set 5</label>
              <input type="number" class="form-control" id="inputSnack5" name="snack5" min="0" max="40" />
              <small class="form-text text-muted">Ham Sandwich.</small>
            </div>
            <div class="form-group col-lg-2 col-md-3 col-sm-4 col-6">
              <img src="https://i.ibb.co/PhR8YDN/snack-set-6.jpg" alt="snack-box-set-6" class="img-thumbnail" />
              <br />
              <label for="inputSnack5">Sandwich Set 6</label>
              <input type="number" class="form-control" id="inputSnack6" name="snack6" min="0" max="40" />
              <small class="form-text text-muted">Roast Pork Bun.</small>
            </div>
          </div>
        </div>
        <!-- End Check Snack Type -->

        <!-- Start Input Remark -->
        <div class="form-group">
          <label for="textAreaRemark">Notes</label>
          <textarea class="form-control" name="remark" id="textAreaRemark" rows="2" placeholder="Tell us you want more..."></textarea>
        </div>
        <!-- End Input Remark -->

        <!-- Start Submit Button -->
        <button class="btn btn-primary btn-block col-lg-2" type="submit">Submit</button>
        <!-- End Submit Button -->
      </form>
      <!-- End Form -->
    </div>
    <!-- End Card Body -->
  </div>
  <!-- End Card -->
  <footer>
    <div class="my-4 text-muted text-center">
      <p>© My Company</p>
    </div>
  </footer>

  <!-- Optional JavaScript -->
  <!-- jQuery first, then Popper.js, then Bootstrap JS -->
  <script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
  <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
  <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>

  <!-- Start Scritp for Form -->
  <script>
    // Example starter JavaScript for disabling form submissions if there are invalid fields
    (function() {
      'use strict';
      window.addEventListener('load', function() {
        // Fetch all the forms we want to apply custom Bootstrap validation styles to
        var forms = document.getElementsByClassName('needs-validation');
        // Loop over them and prevent submission
        var validation = Array.prototype.filter.call(forms, function(form) {
          form.addEventListener('submit', function(event) {
            if (form.checkValidity() === false) {
              event.preventDefault();
              event.stopPropagation();
            }
            form.classList.add('was-validated');
          }, false);
        });
      }, false);
    })();
  </script>
  <!-- End Scritp for Form -->

</body>
              
            
!

CSS

              
                
              
            
!

JS

              
                // Example starter JavaScript for disabling form submissions if there are invalid fields
(function () {
  "use strict";
  window.addEventListener(
    "load",
    function () {
      // Fetch all the forms we want to apply custom Bootstrap validation styles to
      var forms = document.getElementsByClassName("needs-validation");
      // Loop over them and prevent submission
      var validation = Array.prototype.filter.call(forms, function (form) {
        form.addEventListener(
          "submit",
          function (event) {
            if (form.checkValidity() === false) {
              event.preventDefault();
              event.stopPropagation();
            }
            form.classList.add("was-validated");
          },
          false
        );
      });
    },
    false
  );
})();

              
            
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999px

Console