Ключевые слова: 404, access, alarm, alert, background, banner, beware, blocked, board, button, caution, computer, danger, defect, denied, diamond, error, fail, failure, false, fault, found, icon, illustration, insignia, internet, isolated, label, mistake, not, occured, permit, post, problem, red, rhombus, safety, seal, security, sign, stamp, sticker, stop, symbol, technical, warning, web, white, wrong,