Try Code use jQuery.cssHooks to normalize a vendor-specific CSS property- Lautturi

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<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>jquery :last-of-type selector demo - Lautturi.com </title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
    <style>
        #demo{width:300px;height:40px;position:relative;margin: 0 auto;}
        a {
            color: #333;
            text-decoration: none;
            cursor: pointer;
            padding: 5px 10px;
            background-color: #eee;
        }

ul {
            transition: .5s;
            position: absolute;
            top: 30px;
            left: 0;
            z-index: 99;
            margin: 0;
            padding: 5px 0;
            list-style: none;
            background: #fcfcfc;
            box-shadow: 0 0 20px rgba(0,0,0,.1);
        }

li {
            padding: 10px 20px;
            border-top: 1px solid #ddd;
        }

li:nth-child(1){
            border-top:none;
        }
    </style>
</head>
<body>
    <div id="demo">
        <a href="https://www.lautturi.com">lautturi</a>
        <ul id="test">
            <li>Hello</li>
            <li>JavaScript Tutorial</li>
            <li>Learn JavaScript on Lautturi.com</li>
        </ul>
    </div>
    <script>
        $(function () {
            // $( "#test" ).css( "transform", "translateY(20px)" );
            console.log( $( "#test" )[0].style);
        });
    </script>
</body>
</html>