Hello,

Please add this code to the Theme Settings > Custom CSS > Global:

.blog-post-loop:hover>.entry-header .post-img-wrapp>a {
  -webkit-transform: scale(1.03);
  transform:scale(1.03)
}
.blog-post-loop >.entry-header .post-img-wrapp>a {
  -webkit-transition: all .3s ease;
  transition:all .3s ease
}

Best Regards