blue circle is not clear background

blue circle not clear background clearbackground green color vector square lots squares and animal apple apples applevector bar bokeh camera circles cloudy colo fall frame framel fruit giraffe golden grape grapevector greenn halong hexagon hexagonn icecream jovial leaf leaves lemon light lightn many meadow melt mountain much orange pastel pattern pineapple pink poin point purple rabbit red refreshing shine sky sour spheres strawberry tree triangle twocolor unclear variety view watermelon white wooden yellow