.parallax01 {background-image: url(/shared/images/content/bus_58041/hvac-engineering-8.webp); background-attachment:  scroll; background-position-x: right; background-position-y: center;}
.parallax04 {background-image: url(/shared/images/content/bus_58041/hvacengineersparralax12.webp); background-attachment: scroll; background-position-x: right; background-position-y: bottom;} 
.parallax05 {background-attachment:  scroll; background-position-x: right; background-position-y: top;}