JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
		<li>Компы <sup class="zxc">new</sup></li>
		<li>Телефоны</li>
		<li>Холодильники</li>
	</ul>

CSS

.zxc{
	background: red;
	color: #fff;
	-webkit-animation-name: 'movement';
	    -webkit-animation-duration: 0.5s;
	    -webkit-animation-iteration-count:9999;
}


@-webkit-keyframes 'movement' {
	    from {background: red;}
to {background: yellow;} 
	}

@-webkit-keyframes 'movement' {
	    from {background: red;}
     to {background: yellow;} 
	}