twitter-bootstrap - bootstrap 4创建具有多行的模态页脚

Question

我试图在 bootstrap 4 中获得一个模态页脚以具有多个 100% 宽度的行。所以对于下面最基本的 Bootstrap 模式示例，是否可以让关闭和保存更改按钮位于不同的行并且都是 100% 宽度？

<div class="modal fade" id="exampleModalLong" tabindex="-1" role="dialog" aria-labelledby="exampleModalLongTitle" aria-hidden="true">
      <div class="modal-dialog" role="document">
        <div class="modal-content">
          <div class="modal-header">
                <h5 class="modal-title" id="exampleModalLongTitle">Modal title</h5>
            <button type="button" class="close" data-dismiss="modal" aria-label="Close">
              <span aria-hidden="true">&times;</span>
            </button>
          </div><div class="modal-body">
            ...
          </div><div class="modal-footer">
            <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
            <button type="button" class="btn btn-primary">Save changes</button>
          </div>
        </div>
      </div>
    </div>

Answer 1

是的，您可以放置​​两个 modal-footer元素。

<div class="modal fade" id="exampleModalLong" tabindex="-1" role="dialog" aria-labelledby="exampleModalLongTitle" aria-hidden="true">
          <div class="modal-dialog" role="document">
            <div class="modal-content">
              <div class="modal-header">
                    <h5 class="modal-title" id="exampleModalLongTitle">Modal title</h5>
                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                  <span aria-hidden="true">&times;</span>
                </button>
              </div><div class="modal-body">
                ...
              </div>
                <div class="modal-footer">
                    <button type="button col-lg-12" class="btn btn-secondary" data-dismiss="modal">Close</button>
                </div>
                <div class="modal-footer">
                    <button type="button col-lg-12" class="btn btn-primary">Save changes</button>
                </div>
            </div>
          </div>
        </div>

然后在你的css中添加这个

#exampleModalLong .modal-footer .btn{
    width:100%;
}

在这里你有一个jsfillde link