html {
  background-image: url('https://file.garden/aEnK9GK7YhOgwBQV/third/tumblr_e6f494a66988bda58b9be45521e13aa2_fef95791_250.gif');
}

body {
  background-image: url('https://file.garden/aEnK9GK7YhOgwBQV/third/aura.png');
}

.container {
 display: grid;
 grid-template-areas:
    "left right";
 grid-template-columns: 1fr 1fr;
}

.container > div.left {
  grid-area: left; 
 grid-row: 1;
 grid-column: 1; 
}

.container > div.right {
  grid-area: right; 
 grid-row: 1;
 grid-column: 2; 
}