Colorful flat design素材库

Quick answer：

A 'Colorful flat design素材库' refers to a collection of visual elements, such as icons, illustrations, and graphics, designed in a flat design style with vibrant colors. Flat design is a visual style that emphasizes simplicity and uses flat, two-dimensional elements with no shadows or textures. Such a library is commonly used in graphic design, UI/UX design, and web design for creating visually appealing and modern compositions.