<p class="floating-img">

  <img src="https://cdn.imweb.me/upload/S20230820b150b7849d699/ac36806b9110e.png" class="fr-fin fr-dib" width="300">

</p>

<style>

.floating-img {

  animation: floatUpDown 4s ease-in-out infinite;

  display: inline-block;

}

@keyframes floatUpDown {

  0% { transform: translateY(0px); }

  50% { transform: translateY(-12px); }

  100% { transform: translateY(0px); }

}

</style>