#primal 有个很不好的体验，就是当图片是白色背景的时候，点开图片，然后你就找不到白色的关闭按钮，然后你就被困住了，回不去了.
#Primal has a very bad experience, that is, when the picture has a white background, click on the picture, and then you can't find the white close button, and then you are trapped and can't go back.
