This worked for me on Mentor (part of the Brine family)
#collection-599ddf2ef9a61e945ba20a96 .Main {
background-image: url("//static1.squarespace.com/static/598cdb67e3df282ea8b16720/t/599f370fcf81e02b63285958/1503606545633/sky.jpg")!important;
background-position: center center;
background-size: cover;
background-attachment: fixed;
background-repeat: repeat;
}
BrickHouse reacted to allisonstratton820 in attempting to set unique background image for one page, CSS not working with SquareSpace
