image-rendering: auto;

78% 100% 138% 缩小后  放大后 

image-rendering: pixelated; (-ms-interpolation-mode: nearest-neighbor)

78% 100% 138% 缩小后  放大后 

image-rendering: crisp-edges; (-webkit-optimize-contrast)

78% 100% 138%  缩小后  放大后