引导表悬停不起作用

I am using bootstrap 3.3.4 and I have a problem. If I check the bootstrap.css file which I am loading, there is a table-hover class, but I can't use it, it just doesn't work, as I can see, table-bordered for example works. I have checked that the bootstrap.js is also loaded. Did anyone else have the same problem? I tried to search it for so long. Thanks in advanceI am using bootstrap 3.3.4 and I have a problem