this is a design sample draft. If you want the letter paper in the envelope to move according to his route, the movement route can be realized. When there is a problem, there is an effect of returning to the envelope from the position of the hospital picture. I only want the effect of the envelope to the hospital picture movement. Is there any way to solve the problem?
has no code and can only reply out of thin air.
use from to
example:
http://www.w3school.com.cn/ti.
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