JSFiddle - React, Tailwind, and code Playground

HTML

<div class = gamer> </div>
<div class = blok> </div>

CSS

.gamer {
	
position: absolute;

top: 50%;
	
width: 50px;
height: 50px;
background-color: red;	
		
}

.blok {
	
position: absolute;

top: 50%;
left: 50%;	
width: 50px;
height: 50px;
background-color: green;	
		
}

JavaScript

$(document).keydown(function(event) {
		
		if(event.which == 37) {
			
			
			$(".gamer").animate({"left" : "-=50px"});
			}
			
			
			if(event.which == 39) {
			
			
			$(".gamer").animate({"left" : "+=50px"});
			
			}
		
		
});