geomteric background of gray white gradient line with vertical line style, for posters, banners, and others, eps 10

abstract art backdrop background banners black bright comic decoration design effect element energy eps futuristic geometric geomteric gradient graphic gray halftone horizontal illustration image isolated light line lined modern monochrome mosaic others parallel pattern perspective posters print retro shape sign simple space square strip stripe striped style symbol technology template texture vector vertical wallpaper wavy white