Documentation

<form class="row g-3">
    <div class="col-md-4">
        <label for="validationServer01" class="form-label">First name</label>
        <input type="text" class="form-control is-valid" id="validationServer01" value="Mark" required="">
        <div class="valid-feedback">
            Looks good!
        </div>
    </div>
    <div class="col-md-4">
        <label for="validationServer02" class="form-label">Last name</label>
        <input type="text" class="form-control is-valid" id="validationServer02" value="Otto" required="">
        <div class="valid-feedback">
            Looks good!
        </div>
    </div>
    <div class="col-md-4">
        <label for="validationServerUsername" class="form-label">Username</label>
        <div class="input-group has-validation">
            <span class="input-group-text" id="inputGroupPrepend3">@</span>
            <input type="text" class="form-control is-invalid" id="validationServerUsername" aria-describedby="inputGroupPrepend3" required="">
            <div class="invalid-feedback">
                Please choose a username.
            </div>
        </div>
    </div>
    <div class="col-md-6">
        <label for="validationServer03" class="form-label">City</label>
        <input type="text" class="form-control is-invalid" id="validationServer03" required="">
        <div class="invalid-feedback">
            Please provide a valid city.
        </div>
    </div>
    <div class="col-md-3">
        <label for="validationServer04" class="form-label">State</label>
        <select class="form-select is-invalid" id="validationServer04" required="">
            <option selected="" disabled="" value="">Choose...</option>
            <option>...</option>
        </select>
        <div class="invalid-feedback">
            Please select a valid state.
        </div>
    </div>
    <div class="col-md-3">
        <label for="validationServer05" class="form-label">Zip</label>
        <input type="text" class="form-control is-invalid" id="validationServer05" required="">
        <div class="invalid-feedback">
            Please provide a valid zip.
        </div>
    </div>
    <div class="col-12">
        <div class="form-check">
            <input class="form-check-input is-invalid" type="checkbox" value="" id="invalidCheck3" required="">
            <label class="form-check-label" for="invalidCheck3">
                Agree to terms and conditions
            </label>
            <div class="invalid-feedback">
                You must agree before submitting.
            </div>
        </div>
    </div>
    <div class="col-12">
        <button class="btn btn-primary" type="submit">Submit form</button>
    </div>
</form>