set of groovy poster set. vertical checkerd backgrounds in trendy retro 70s style

groovy 70s poster backgrounds vector vertical set print trendy playful wavy checkerboard geometric graphic swirl psychedelic grid pastel optical chequered 80s nostalgic ornament retro square distorted abstract vintage 90s chess mosaic twirl gingham simple hippy sixties curvy artwork cover 1970s 1960s mesh illusion art collection minimal template checkered