Ключевые слова: alert, background, banner, black, business, cement, coarse, concept, concrete, construction, constructor, danger, do not enter, frame, grunge, grungy, hazard, icon, illustration, industry, information, label, old, page, pattern, progress, rendering, retro, risk, safety, security, sign, sites, stripes, symbol, texture, the attention, the caution, the road, traffic, under, urban, wall, warning, website, word, work in progress, worker, yellow,