bootsrap 4 forms

1<form>
2  <div class="row">
3    <div class="col">
4      <input type="text" class="form-control" placeholder="First name">
5    </div>
6    <div class="col">
7      <input type="text" class="form-control" placeholder="Last name">
8    </div>
9  </div>
10</form>