dark overlay on image with white title

Hi,

I have created a row with a background image and added a title on it (color= white)

To make the contrast stronger, I would like to add an dark overlay on the image. Which css should I use? I’ve tried to add the following class to the row but then, it replaces my background image.

.film-header {
background:
linear-gradient(
rgba(0, 0, 0, 0.6),
rgba(0, 0, 0, 0.6)
) !important;
}
Thanks in advance,

Jonathan

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