Posts layout after updating to 4.5.0

Hi there !

I updated from evolve 3.4.4 to 3.5.0. I wish the changelog.txt file was a bit more specific as to the changes in the design, because fixing the Bootstrap slider was time consuming. I fixed most of the issues with the CSS file,but there is one problem I cant seem to repair:

I had this code in the Custom CSS to limit the size of the thumbnails to 170px in the home page posts:

.blog img.attachment-post-thumbnail.wp-post-image.img-responsive, .blog .entry-content .thumbnail-post .mask, .blog .entry-content .thumbnail-post div.icon, .blog span.thumbnail-post {
  max-width: 170px;
}

That still works. However, I also had this code to make the same thing happen in the category posts:

.category img.attachment-post-thumbnail.wp-post-image.img-responsive, .category .entry-content .thumbnail-post .mask, .category .entry-content .thumbnail-post div.icon, .category span.thumbnail-post {
  max-width: 170px;
}

The thumbnails are the right size, but they have an extended border that reaches across the full width of the content area. This prevents the next custom code from working:

.category .entry-content .thumbnail-post {
    float: left;
    margin: 0 20px 0 0 !important;
}

This is supposed to allow the exert to be placed at the right of the thumbnail (instead of below it).

Is there any way to fix this ?
Thank you !