Add a Zoom Effect on Hover to Post Images

Here is a cool piece of CSS to achieve this effect:

.post-image {
    position: relative;
    overflow: hidden;
}
.post-image img {
    max-width: 100%;
  
    -moz-transition: all 0.3s;
    -webkit-transition: all 0.3s;
    transition: all 0.3s;
}
.post-image:hover img {
    -moz-transform: scale(1.2);
    -webkit-transform: scale(1.2);
    transform: scale(1.2);
}