How to fix hidden block before parallax?

Question

css

I connected parallax.js to the page
There are two blocks.
The first block has a hidden block, which is revealed by clicking on the link.
The second block has parallax.
So, when I click on a link and open a hidden block, this block will overlap with the second block.
How can you fix this?

Answer 1

Fixed as follows.

$('a.expand').click(function (e) {
        e.preventDefault();
        var blockid = $(this).attr('data-block');
        $(blockid).toggle(800, function () {
            $(window).resize();
        });
    });

After the opening event, we resize the window and it becomes normal