JSFiddle - React, Tailwind, and code Playground

HTML

<img src="http://lakestrike.pl/images/SkillShot/logo.png" alt="">

CSS

img {
  animation-name: pulseOnce;
  animation-duration: 2s;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}

@keyframes pulseOnce {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.15);
  }
  100% {
    transform: scale(1);
  }
}