Ключевые слова: 3d, accident, advice, alert, attention, background, beware, blue, button, careful, caution, circle, clean, cleaner, danger, fall, floor, hazard, icon, illustration, image, indoors, information, isolated, isometric, janitorial, lobby, maintenance, message, notice, object, pictogram, plastic, precaution, prevention, risk, safety, sign, slide, slip, slippery, surface, symbol, warning, wet, white,