Bootstrap 4模态中心内容 [英] Bootstrap 4 Modal Center Content
问题描述
有人可以解释一下如何在Bootstrap 4模式中使标题水平居中吗
Can someone please explain how to horizontally center the title in a Bootstrap 4 modal.
我尝试了text-center
,mx-auto
和ml-0 / mr-0
,但是它们似乎没有用.
I've tried text-center
, mx-auto
and ml-0 / mr-0
but they don't appear to work.
这是链接到小提琴.
下面的代码;
<!-- Button trigger modal -->
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal">
Launch demo modal
</button>
<!-- Modal -->
<div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalLabel">Modal title</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</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>
推荐答案
modal-header
是display:flex,因此居中放置其内容(例如modal-title
)的方式有所不同.您可以使用mx-auto
,但是居中是相对于关闭按钮的,因此它并不是完全居中.
The modal-header
is display:flex so centering its' content (like the modal-title
) works differently. You can use mx-auto
but then centering is relative to the close button so it's not exactly centered.
一种选择是使标题显示:块(d-block
)并使用text-center
.
One option is to make the header display:block (d-block
) and use text-center
.
https://jsfiddle.net/44v0b25k/
<div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header d-block">
<button type="button" class="close float-right" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
<h5 class="modal-title text-center" id="exampleModalLabel">Modal title</h5>
</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>
另一种选择是在modal-title
上使用w-100
使其全角,并且text-center
也将起作用.
Another option is to use w-100
on the modal-title
so that it's full width, and text-center
will also work.
<div class="modal-header">
<h5 class="modal-title w-100 text-center" id="exampleModalLabel">Modal title</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
https://jsfiddle.net/306ob2e5/
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