Fixed (Stiky) Close cutton

1

I have follow problem.) I want the close button on top fixed not scroll with the content.
Have try all no solution found.

<div class="overlay fill">
            <div class="bg fill"></div>
            <div class="momentan">
                <a href="javascript:" class="close">Close</a>
                <!-- <div class="content card dark no-padding shadow"></div>-->
                <div class="overlay-content">

                    <div class="twitter">
                        <div>
                            <a class="twitter-timeline" data-lang="de" data-theme="dark" href="https://twitter.com/SMessebau?ref_src=twsrc%5Etfw">
                                <a href="javascript:" class="close">Tweets by SMessebau</a>
                                <script defer src="https://platform.twitter.com/widgets.js"></script>
                        </div>
                    </div>

                </div>
            </div>
        </div>

<script defer>

    $(function () {
        var $play = $('a.start-overlay'),
            $lightbox = $('div.overlay'),
            $close = $('div.bg, a.close', $lightbox),
            $current = $('div.momentan', $lightbox),
            clear_timeout;

        $play.on('click', function () {
            $body.addClass('overflow');
            $lightbox.scrollTop(0).addClass('active');
            $current.addClass('active');
        });

        $close.on('click', function () {
            $body.removeClass('overflow');
            $lightbox.removeClass('active');
            $current.removeClass('active');

        });
    });
   ![close-button-problem|690x421](upload://8UJx7HFlKm2weyqSz9UMehJv4V8.jpeg) 
</script>
2

Welcome, Harry.

I have moved this post to a more suitable sub-forum.

I’ve edited your post for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.

See this post to find the backtick on your keyboard. The “preformatted text” tool in the editor (</>) will also add backticks around text.

Note: Backticks are not single quotes.

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