u/Historical_Class_284

I’m making a website, I’m having issues on making a background for it. This image is supposed to start at the header. I need the dark trees on the bottom to fade out, same color, vertically, so it can fit my website. Idk if I’m explaining myself correctly but I don’t want to alter anything else on the image, just add vertically, a dark gradience that matches the color of the bottom trees so it can fit my entire homepage. Thank you