Displaying background image full screen on Desktop view and Mobile view

I have set up different background images to display on different pages and seemed to have it working, however now working from another computer, the background images on the Home page and Music page are not taking up the full screen. Also, on mobile the Home page is not displaying full screen either. This is the CSS I'm using for the background images on Desktop:

#collection-5de6d28545f1a7075b7a2741 #canvas{
  max-width: 100% !important;
 padding-left: 0px !important;
 padding-right: 0px !important;
 padding-top: 11px !important;
 background: url(https://static1.squarespace.com/static/5cff45ae4a957c0001a6673b/t/5dc6fcead1c0ab7b9e4f5e60/1573321963518/richie_+5.jpeg)no-repeat center center;
  -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}

#collection-5de6d2e045f1a7075b7a34a3 #canvas{
  background-position: cover;
  max-width: 100% !important;
 padding-left: 0px !important;
 padding-right: 0px !important;
 padding-top: 11px !important;
  background: url(https://static1.squarespace.com/static/5cff45ae4a957c0001a6673b/t/5df035e05d133c6a73380fa1/1576023521067/IMG_1683.JPG)
}

For Mobile I'm using:

@media only screen and (max-width: 400px) {
  #collection-5de6d28545f1a7075b7a2741 .canvas{
    max-width: 100% !important;
    max-height: 100% !important;
 	padding-left: 0px !important;
 	padding-right: 0px !important;
 	padding-top: 11px !important;
 background: url(https://static1.squarespace.com/static/5cff45ae4a957c0001a6673b/t/5dc6fcead1c0ab7b9e4f5e60/1573321963518/richie_+5.jpeg)no-repeat center center;
  -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
  }
}

The website I'm working on is richiequake.com, the password to access it is Help123. What I'm I missing in my CSS that the background images are not displaying full screen on Desktop and Mobile?

Have you solved yet? If no, i can take a look