hello2.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>hello2.html</title>
</head>
<body>
    <button onclick="move3()" >오른쪽으로 움직이기</button>
    <br>
    <img class="my-img" id="kimImg" src="images/kim1.png">
    <br>
    <img class="my-img" id="rabbitImg" src="images/rabbit_1.png">
    <script>
        function move(){
            document.querySelector("#kimImg").style.marginLeft="100px";
        }

        function move2(){
            document.querySelector(".my-img").style.marginLeft="100px";
        }

        function move3(){
            document.querySelector("#kimImg").style.marginLeft="100px";
            document.querySelector("#rabbitImg").style.marginLeft="100px";
        }
    </script>
</body>
</html>