Ключевые слова: a4, abstract, advertisement, announcement, background, banner, blue, bright, bubble, call, card, chat, color, communication, composition, contact, conversation, converse, design, dialogue, discussion, ellipsis, geometrical, geometry, graphic, graphical, interaction, link, message, messenger, modern, news, notice, notification, poster, print, speak, speech, talk, vertical, visual, vivid, wallpaper, yellow,