如何尝试从background: rgba(255,255,255,0)到background: rgba(255,255,255,1)的过渡? (从不透明度为零的白色到不完全透明度为白色).

How about trying a transition from background: rgba(255,255,255,0) to background: rgba(255,255,255,1)? (That’s from white with zero opacity to white with full opacity.)

例如参见 http://jsfiddle.net/tajMG/