white background. tech bg. abstract metal effect marble foil. light gray color texture. grey silver pattern. modern backdrop

presentation certificate background illustrati technology corporate backdrops technical gradation wallpaper rectangle grayscale structure patternes patterned abstract backdrop gradient business medicine aluminum platinum glittery delicate brochure patterns paternes texture pattern surface glitter premium digital overlay science element twinkle fashion neutral paterns effect marble silver modern design prints vector subtle patern pastel banner techno visual calmly screen tender poster swoosh white