Overlapping elements flat icons with outlines - Stock vector

overlapping, coverage, shadow, shading, z-index, front, back, arrangement, stack, elements, items, objects, panels, windows, pages, parts, ingredients, layers, canvases, surfaces, variety, diversity, icons, set, flat, buttons, application, round, circles, frames, outlines, strokes, design, template, user-interface, element, vector, illustration, symbol, plain, simple, white, green, red, yellow, blue, brown, magenta, mustard, gray