@media {}

@media not all and not (color)  {  }

@media not all and (color) and (color)  {  }

@media not all and (color) and (color)  {  }

@media (width <= 500px) and (width >= 600px) and (width >= 600px), not all {  }
@media (width <= 500px) and (width >= 600px) and (width >= 600px) and (width >= 600px), not all {  }
@media (width <= 500px) or (width >= 600px) or (width >= 600px) or (width >= 600px), not all {  }
@media (width <= 500px) or (width >= 600px) or (width >= 600px), (color) and (hover: none) {  }
@media (width <= 500px) and ((width >= 600px) or (width >= 600px)), only print  {  }
@media (width <= 500px) or ((width >= 600px) and (width >= 600px)) {  }
@media (600px < height), not all and not (600px < height) {}

@media not all and not (color)  {
    #inner {
				background-color: skyblue;
		}
		div {
				background-color: skyblue;
		}
}
