It’s because you have incorrect css being used on some divs within that page.
On that page a couple of divs down from the H1 deceleration you have a div with some inline css:
<div style="width: 100%;height: 0;padding-bottom: 56%;position: relative;">
You need to remove the padding-bottom:56%; so it is:
<div style="width: 100%;height: 0;position: relative;">
Then in you have some css on in that template inside the <style></style> tags of:
.above {
margin-top: -580px;
}
You also need to remove that completely. Once you do that your issue will be gone and your content will be positioned properly.