Roses and congratulations on march 8 on a black background with heartsRoses and congratulations on March 8 on a black background with hearts
A field of flowers on a background of clouds and blue skyA field of flowers on a background of clouds and blue sky
A lot of lilies of the valley against the background of the evening sky close-upA lot of lilies of the valley against the background of the evening sky close-up
Основной цвет, тон, на к-ром пишется картина. Задний план картины. Общие условия, обстановка, где что-н. происходит ( книжн. ). Единица степени громкости.