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                <div class="container my-5">
<h3>Bootstrap 4 HTML5 form validation demo</h3>
  <p><a href="">Learn more about form validation via MDN </a></p>
  <p><a href="">Bootstrap 4 form validation class documentation </a></p>

  <div class="card bg-light">
<form class="card-body" novalidate="" action="" method="" id="bootstrapForm">
    <div class="form-group">
        <label class="h4 form-control-label" for="input1">Company name<abbr class="text-danger" title="This is required">*</abbr></label>
        <input type="text" class="form-control" name="i1" id="input1" required>
        <div class="valid-feedback">Company name looks good</div>
        <div class="invalid-feedback">Please enter your company name. This field is required</div>
    <div class="form-group">
        <label class="h4 form-control-label" for="input1">Phone<abbr class="text-danger" title="This is required">*</abbr></label>
        <input type="tel" placeholder="123-456-7890"
           pattern="[0-9]{3}-[0-9]{3}-[0-9]{4}" class="form-control" name="i1" id="input1" required>
        <div class="valid-feedback">Phone # looks good</div>
        <div class="invalid-feedback">Please enter a phone # like 123-456-7890. This field is required.</div>
    <div class="form-group">
        <label class="h4 form-control-label" for="input3">Website<abbr class="text-danger" title="This is required">*</abbr></label>
        <input type="url" placeholder="https://" class="form-control" name="i3" id="input3" required>
        <div class="valid-feedback">Website looks good.</div>
        <div class="invalid-feedback">Please enter a valid URL. This field is required.</div>

        <button type="submit" class="btn btn-secondary">Send Form</button>

<!-- /.card -->

<!-- /.container -->



                .form-valid  {

.form-control-label abbr {
  text-decoration: none;
  font-weight: normal;


                // adapted from

$("#bootstrapForm").submit(function(event) {

    // make selected form variable
    var vForm = $(this);
  If not valid prevent form submit
    if (vForm[0].checkValidity() === false) {
    } else {
      // Replace alert with ajax submit here...
      alert("your form is valid and ready to send");
    // Add bootstrap 4 was-validated classes to trigger validation messages