This is the
HERO-OVERLAY

It darkens the Image to display information on top without need for colored background area to see the information - use a lighter text-color!

There are several background opacities. Use the class "hero-overlay" and add one of the following opacity-classes (e.g. "opacity-dot25" for "background-color: rgba(0,0,0,.25);"):

"opacity-dot25", "opacity-dot5", "opacity-dot75", "opacity-dot33", "opacity-dot66", "opacity-dot05", "opacity-dot1", "opacity-dot2", "opacity-dot4", "opacity-dot6", "opacity-dot8",