overlay css rgbna code example
Example: how to have a background image with a color overlay
/* Working method */
.tinted-image {
background:
/* top, transparent red, faked with gradient */
linear-gradient(
rgba(255, 0, 0, 0.45),
rgba(255, 0, 0, 0.45)
),
/* bottom, image */
url(image.jpg);
}