@keyframes 'move_left'{
    
	from {
		margin-left: 130px;
    }
	
    to {
		margin-left: 0px;
    }   	
}

<script>
function go(){
 var a = document.createElement("style");
 a.innerText = "body {color:red}";
 document.head.appendChild(a);
}
</script>
текст
<input type="button" onclick="go()" value="стиль" />