Give me a transparent blank, don't tell me how to do it, just give it to me! ! Urgent! ! !

Two, one in png format and one in gif format, with a resolution of 400x300. Other formats are opaque. When you open it with virtual video software, you will see it. General picture viewing software can't see transparency, and it will be white or black. God, only one picture can be uploaded here, which is in png format.