Background video not showing in mobile

Hi there,

My hero-video, which is a background video from Vimeo wont show on mobile. I'm using custom code on the rest of the site, but not in this section and I cannot see that any of it would interfere. Just in case, I've pasted the code here is anyone can see if something would block mobile view for my front page 🙏🏼

www.mannafilm.dk 

Thanks a million!

/Cecilie

CODE
a {
  text-decoration: none !important;
}

p {
  line-height: 1.2
}

h3 {
  line-height: 0.9
}
//Lille sektion øverst for at agere baggrund til menu

#block-627427bcfbbaf2117580ae32
{margin-top:-50px;}

//hover effekt i menu
/* Nav item color */
.header-nav-item a {
    transition-duration: 0.4s;
}
/* Nav item hover color */
.header-nav-item a:hover {
    color: #FFB0FE !important;
    transition-duration: 0.4s;
}
/* Nav item active color */
.header-nav-item--active a {
    color: #2E37FE !important;
}

//.header-nav-item a{background-image:none!important;}
//.header-nav-item:hover  {background:#2E37FE;}

.header-nav-item {padding:0.6rem 1rem 0.6rem 1rem!important;}

//links hover

//tekst i footer
footer p {
  font-size: 0.8rem !important;
  letter-spacing: 0.1rem;
}

footer a {
  font-size: 0.8rem !important;
  text-decoration: none !important;
}

footer a:hover {
color: #FFB0FE;
}

//Linjeforskel på film
#collection-6242c66f40b295524d4729a7 p {line-height: 1.2}

#collection-6242c66f40b295524d4729a7 h3 {font-size: 1.5rem; line-height: 0}

//links
p a:hover {
  color:#FFB0FE!important;}

@media only screen and (min-width: 660px) {
section[data-section-id="63a194c96f5be9130adbc0ba"]
 .sqs-block-html{
background: hsla(317, 0%, 32%, 0.55);
transition: all 1s;
}

section[data-section-id="63a194c96f5be9130adbc0ba"]
.sqs-block-html:hover{
opacity: 0;
transition: all 1s;
}
}

//Ret coverbilleder
//Kalak
   #collection-63a0137ff91ce37a2bc9bd3b .page-section:nth-child(1) .section-background {margin-top:100px!important}

//When two become one
  #collection-63a4ce3d37a37a550b62d907 .page-section:nth-child(1) .section-background {margin-top:100px!important}

//Songs in the sun
#collection-6255c444b28cb46dbf211339 .page-section:nth-child(1) .section-background {margin-top:80px!important}

#collection-6255bc9a141c3a1b4390861c .page-section:nth-child(1) .section-background {margin-top:80px!important}

You mean this video?

Yes! The one on the front page - it wont show on mobile. Can you help me fiugre out why? 

Thanks a lot!