Ключевые слова: 1, 1 may, 1st, background, badge, banner, business, calligraphy, card, celebration, concept, day, design, drawn, engineer, greeting, hand, happy, holiday, illustration, industrial, international, isolated, job, label, labor, labour, lettering, logo, may, national, occupation, one, poster, quote, red, retro, sticker, text, typography, vintage, white, worker, workers, working,