Shells on the coast against the background of the seaShells on the coast against the background of the sea
A river turning into a waterfall on the background of the steppeA river turning into a waterfall on the background of the steppe
A house on the lake on the background of mountainsA house on the lake on the background of mountains
Beautiful lake on the background of snowy mountainsBeautiful lake on the background of snowy mountains
Autumn forest near the reservoir against the background of mountainsAutumn forest near the reservoir against the background of mountains
Основной цвет, тон, на к-ром пишется картина. Задний план картины. Общие условия, обстановка, где что-н. происходит ( книжн. ). Единица степени громкости.