Ключевые слова: aged, back ground, backdrop, background, billboard, black, blackboard, blank, board, chalk, chalkboard, classroom, close, college, communication, copy space, design, dirt, dirty, education, element, empty, grunge, grungy, high school, messy, negative space, old, retro, rough, rustic, school, scratch, smudged, template, texture, traditional, university, vintage, wall, wallpaper,