body.home {
 background: url(http://www.bloomcottage.com.au/wp-content/uploads/2019/03/19055837_1870528776554567_665853464445027358_o.jpg) no-repeat fixed 0 0 transparent;
		background-size: cover; 
		-webkit-background-size: cover;
		-moz-background-size: cover;
		-o-background-size: cover;
}

@media only screen and (max-width: 767px) {
  body.home {
    background: url(http://www.bloomcottage.com.au/wp-content/uploads/2019/07/mobile-e1562761166561.jpg) no-repeat fixed 0 0 transparent;
  }
}