Background gradient watercolor poster

Quick answer：

The phrase 'background gradient watercolor poster' refers to a design technique where a watercolor gradient is used as the background of a poster. Watercolor is a painting method that employs water-soluble pigments and is known for its translucent, flowing qualities. A gradient in this context is a smooth transition of color from one shade to another, creating depth and visual interest in the design. This technique is often used in graphic design for creating aesthetically pleasing and engaging visual content.