<select name="" id="">
  <option value="">test</option>
  <option value="">test 1</option>
  <option value="">test 2</option>
</select>

$(document).ready(function () {
        $('.modal').modal();
        $('select').formSelect();
    });

<ul id="select-options-15eef910-6f5c-ea6f-a7e5-1a9eeb3c4047" class="dropdown-content select-dropdown" tabindex="0" style="display: block; width: 1182.11px; left: 0px; top: -238.984px; height: 284.98px; transform-origin: 0px 100% 0px; opacity: 1; transform: scaleX(1) scaleY(1);"><li id="select-options-15eef910-6f5c-ea6f-a7e5-1a9eeb3c40470" tabindex="0" class=""><span>test</span></li><li id="select-options-15eef910-6f5c-ea6f-a7e5-1a9eeb3c40471" tabindex="0"><span>test 1</span></li><li id="select-options-15eef910-6f5c-ea6f-a7e5-1a9eeb3c40472" tabindex="0"><span>test 2</span></li><li id="select-options-15eef910-6f5c-ea6f-a7e5-1a9eeb3c40473" tabindex="0"><span>test 2</span></li><li id="select-options-15eef910-6f5c-ea6f-a7e5-1a9eeb3c40474" tabindex="0" class=""><span>test 2</span></li><li id="select-options-15eef910-6f5c-ea6f-a7e5-1a9eeb3c40475" tabindex="0" class="selected"><span>test 2</span></li><li id="select-options-15eef910-6f5c-ea6f-a7e5-1a9eeb3c40476" tabindex="0"><span>test 2</span></li></ul>

<ul id="select-options-f505c135-4908-3edb-6944-32b5e7f00630" class="dropdown-content select-dropdown" tabindex="0" style="display: block; width: 584.453px; left: 0px; top: 0px; height: 0px; transform-origin: 0px 0px 0px; opacity: 1; transform: scaleX(1) scaleY(1);"><li class="disabled selected" id="select-options-f505c135-4908-3edb-6944-32b5e7f006300" tabindex="0"><span>Выберите роль</span></li><li id="select-options-f505c135-4908-3edb-6944-32b5e7f006301" tabindex="0"><span>Менеджер</span></li><li id="select-options-f505c135-4908-3edb-6944-32b5e7f006302" tabindex="0"><span>"Покупатель"</span></li><li id="select-options-f505c135-4908-3edb-6944-32b5e7f006303" tabindex="0"><span>Admin</span></li></ul>