Check out example codes for "how to css in jquery". It will help you in understanding the concepts better.

Code Example 1

$('.name').css('color':'blue');

Code Example 2

echo get_stylesheet_directory_uri();

Code Example 3

$(init);
    
function init() {
    $("h1").css("backgroundColor", "yellow");
    $("#myParagraph").css({ "backgroundColor": "black", "color": "white" });
    $(".bordered").css("border", "1px solid black");
}

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