Hero background video 100% height within the section

Site URL: https://flower-springtail-8n3z.squarespace.com/

site password: tothemoon

I now inserted a youtube video as the hero background, the section height is set as 90vh, but I want to make the video always fits 100% height (and auto crop left and right). I tried adjusting height of sqs-block-content and section and both not working. Please help.

Hi. Where is video?

it's the video on the header of home page. @tuanphan

@tuanphan still need help on this.

Add to Design > Custom CSS

[data-section-id="608a398bf571e2467b776823"] iframe {
    height: 100% !important;
    width: auto !important;
    left: 0 !important;
    top: 0 !important;
}