Fix popular images Blogger Options

[Jeckcoeler]

On my website [howtoplaystation.com], the images of the popular posts on the right side are too small, blurred and surrounded by black borders. Can someone help me fix this?

I tried some CSS codes, but didn't help.

I'm looking for css code that removes the black borders, blurring and makes the images bigger.

.PopularPosts .item-thumbnail {
width: initial;
height: 70px;
}
.PopularPosts ul li img{
object-fit: fill!important;
}
I tried this code, but didn't seem to fix the problem

Thank you in advance.

[Ivy Crawford]

Here I would do as pandy suggests, just fix the images and you'll be fine.