subscribe

    <div class="row">
        <div class="col-md-12">
            <form>
                <div class="input-group">
                    <input type="text" style="background: transparent;" name="search" id="search" value="test" placeholder="Email" class="form-control">
                    <span class="input-group-btn">
                        <input type="button" name="commit" value="Search" class="btn btn-outline-dark" data-disable-with="Search">
                     </span>
                </div>
            </form>
        </div>
    </div>