The black poster paired with that gradient looks nice

Quick answer：

The phrase '黑色海报搭配那种渐变好看' refers to a design aesthetic where a black poster is complemented by a visually appealing gradient. In graphic design, gradients are used to create a smooth transition between two or more colors, adding depth and visual interest to the design. A well-executed gradient can enhance the overall look of a black poster, making it more dynamic and engaging.