multicolor gradient beckround for cover template,gradient backround

abstrack abstract art azure backdrop background backo backroun backround banner bar beckround blank blue blur blurreckround blurred brand bright business card circle collection color colorful coupon cover design diagram discount drawing element font frame gift gradient graphic layout light line magenta modern multicolor offer paint paper pattern petal pink poster present presentation purple sale screenshot set sign sky soft symbol template text texture trendy vibrant violet voucher wallpaper web website white