I am trying to change the CSS using jQuery:
$(init);
function init() {
$("h1").css("backgroundColor", "yellow");
$("#myParagraph").css({"backgroundColor":"black","color":"white");
$(".bordered").css("border", "1px solid black");
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
<div class="bordered">
<h1>Header</h1>
<p id="myParagraph">This is some paragraph text</p>
</div>