Table-hover died, how to resurrect it?

Question

Bootstrap

I transferred the template to yii2.
Bootstrap 3.
And in-1 hover died. The color no longer changes on hover. This is a stock bootstrap class for table-hover tables.
While table-striped works great.
The table-responsive class is completely broken, the slider to scroll the table does not appear

Answer 1

No other styles connected? Nobody reassigns them?
Here is how to apply them, https://getbootstrap.com/docs/3.3/css/#tables
Are you exactly doing this?

<div class="table-responsive">
<table class="table table-hover">
  ...
</table>
</div>

See in the developer console what styles are applied to your table