I can delete the slider in blog page?

Hi, thanks for your work.

I’ve a problem with slider, I d0n’t want see the slider in Blog page.

I changed the css file for id blog page, in my website the blog id is 54 and i wrote in custom css

.page-id-54 .slider-wrapper {
display:none!important;
}

but i can still see the slider.

How can I solve the problem?

Thanks.