CSS code as shown in above video:
/* Make the image bounce when you hover over it */ .hover-bounce img:not(.wp-smiley) { display: inline-block; vertical-align: middle; transform: perspective(1px) translateZ(0); box-shadow: 0 0 1px rgba(0, 0, 0, 0); transition-duration: 0.5s; } .hover-bounce img:not(.wp-smiley):hover, .hover-bounce img:not(.wp-smiley):focus, .hover-bounce img:not(.wp-smiley):active { transform: scale(0.8); transition-timing-function: cubic-bezier(0.47, 2.02, 0.31, -0.36); }