<select class="mdb-select md-form" >

  <option value="" disabled selected>Choose your country</option>

  <option value="1">USA</option>

  <option value="2">Germany</option>

  <option value="3">France</option>

  <option value="4">Poland</option>

  <option value="5">Japan</option>

</select>

<button class="btn-save btn btn-primary btn-sm">Save</button>