在Bootstrap中，我如何让我的步进器左对齐？

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/js/bootstrap.bundle.min.js"></script>

<div class="container">
  <div class="row">
    <div class="col">
      <div class="input-group">
        <button class="btn btn-outline-secondary" type="button" id="minus-btn">-</button>
        <input type="text" class="form-control text-center" value="1" id="number-input">
        <button class="btn btn-outline-secondary" type="button" id="plus-btn">+</button>
      </div>
    </div>
  </div>
</div>

<style>
  .input-group {
    display: flex;
    justify-content: flex-start;
  }
</style>