[HTML] iframe 스크롤 연동

<style>
    .hide-scrollbar {
        overflow: hidden;
    }
</style>
<iframe src="https://내_웹사이트_주소" class="hide-scrollbar"></iframe>
<iframe src="https://불러온_웹사이트_주소" class="hide-scrollbar"></iframe>

<script>
    const iframe1 = document.getElementById("iframe1");
    const iframe2 = document.getElementById("iframe2");

    iframe1.addEventListener("scroll", () => {
        iframe2.scrollTop = iframe1.scrollTop;
    });

    iframe2.addEventListener("scroll", () => {
        iframe1.scrollTop = iframe2.scrollTop;
    });
</script>