Ключевые слова: abstract, abstract background, atmospheric, backdrop, backdrop design, background, blue, blue gradient, blurred, blurred background, calm, clean, color, color background, cool, dark, dark blue, deep, design, diffused, diffused background, gradient, gradient background, hue, hue background, light, light blue, serene, shade, shade background, simple, smooth, smooth background, soft, soft background, subtle, tone, tone background, tranquil, transition,