使用帶有標簽按鈕的表單組與頂部對齊

Question

我正在使用引導程序 4。當我在下面的示例中使用表單組時。 對齊保存按鈕時出現問題。 它正在與頂部對齊。 因為我沒有同級別的標簽。

我嘗試使用此示例Bootstrap 表單內嵌上面的標簽，位置按鈕

但我仍然需要硬編碼 margin-top。 否則按鈕將與底部對齊。 無論如何，我可以使用沒有覆蓋的純引導程序來實現這一點嗎？

<form method="POST" enctype="multipart/form-data" class="form-horizontal">
  <div class="form-group row">
    <div class="col-md-4">
      <input class="form-control" type="text" placeholder="Search by Unit" />
    </div>
    <div class="col-md-4">
      <button type="submit" class="btn  btn-primary"><i class="fa fa-fw fa-search"></i>Search</button>
    </div>
  </div>
</form>
<form method="POST" enctype="multipart/form-data" class="form-horizontal">
  <div class="row">
    <div class="col-md-4">
      <div class="form-group">
        <label for="zones">Zones</label>
        <select class="form-control" id="zones">
          <option>Zone1</option>
          <option>Zone2</option>
        </select>
      </div>
    </div>
    <div class="col-md-5">
      <div class="form-group">
        <label for="unitname">Unit Name</label>
        <input class="form-control" type="text" id="unitname" placeholder="Enter the Unit Name" />
      </div>
    </div>
    <div class="col-md-3">
      <button type="submit"  class="btn  btn-primary"><i
          class="fa fa-fw fa-save"></i>Save</button>
    </div>
  </div>
  <div class="form-group row">
    <div class="col-md-12">
      <table class="table table-stripped">
        <thead>
          <tr>
            <th>#</th>
            <th>Zone Name</th>
            <th>Status</th>
          </tr>
        </thead>
        <tbody>
          <tr *ngFor="let zone of zones|async">
            <td>{{zone.zoneId}}</td>
            <td>{{zone.zoneName}}</td>
            <td>{{zone.status}}</td>
          </tr>
        </tbody>

      </table>
    </div>
  </div>
</form>

Answer 1

一種解決方案是將按鈕包裝在一個form-group ，然后將類d-flex和align-items-end到包含它的col-* div。 例子：

<div class="col-md-3 d-flex align-items-end">
  <div class="form-group">
    <button type="submit" class="btn btn-primary">
      <i class="fa fa-fw fa-save"></i>Save
    </button>
  </div>
</div>

最小化示例：

請注意， border和border-*類只是為了幫助可視化布局。

 <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js" integrity="sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut" crossorigin="anonymous"></script> <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous"> <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js" integrity="sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script> <div class="container-fluid"> <form method="POST" enctype="multipart/form-data" class="form-horizontal"> <div class="form-group row"> <div class="col-md-4"> <input class="form-control" type="text" placeholder="Search by Unit"/> </div> <div class="col-md-4"> <button type="submit" class="btn btn-primary"> <i class="fa fa-fw fa-search"></i>Search </button> </div> </div> </form> <form method="POST" enctype="multipart/form-data" class="form-horizontal"> <div class="row"> <div class="col-md-4 border border-warning"> <div class="form-group"> <label for="zones">Zones</label> <select class="form-control" id="zones"> <option>Zone1</option> <option>Zone2</option> </select> </div> </div> <div class="col-md-5 border border-primary"> <div class="form-group"> <label for="unitname">Unit Name</label> <input class="form-control" type="text" id="unitname" placeholder="Enter the Unit Name" /> </div> </div> <div class="col-md-3 d-flex align-items-end border border-danger"> <div class="form-group"> <button type="submit" class="btn btn-primary"> <i class="fa fa-fw fa-save"></i>Save </button> </div> </div> </div> </form> </div>