Hello,

Replace the code for this one:

.blog-post-loop:hover>.entry-header .post-img-wrapp>a {
  -webkit-transform: scale(1.03);
  transform:scale(1.03);
   opacity: 1;
}
.blog-post-loop >.entry-header .post-img-wrapp>a {
  -webkit-transition: all .3s ease;
  transition:all .3s ease;
}
.blog-post-loop .post-img-wrapp {
   background-color: transparent;
   overflow: visible;
}

You will get the same effect as you show on the link.

Best Regards