用省略号截断长文本字符串。
对于较长的内容，您可以添加一个类来用省略号截断文本。需要 display： inline-block 或 display： block。.text-truncate
此文本很长，一旦显示将被截断。
<!-- Block level -->
<div class="row">
<div class="col-2 text-truncate">
This text is quite long, and will be truncated once displayed.
</div>
</div>
<!-- Inline level -->
<span class="d-inline-block text-truncate" style="max-width: 150px;">
This text is quite long, and will be truncated once displayed.
</span>