<div id="modal-group" class="modal">
  <div class="modal-content bg-dark text-white p-4 border-danger" style="max-width:400px">
    <div class="modal-header border-secondary border-0 p-0 mb-3">
        <h4 class="m-0">New Group</h4>
        <button class="btn-close btn-close-white" onclick="app.closeModal()"></button>
    </div>
    <input id="groupInput" placeholder="Group Name" class="form-control bg-black text-white border-secondary mb-3">
    <button onclick="app.addGroup()" class="btn btn-danger w-100">Create Group</button>
  </div>
</div>