全屏幻灯片源代码大背景图片切换,淡入淡出风格大背景图片切换，右下角带圆点控制按钮，点击即可控制图片播放，满屏显示图片。-Full-screen slide show source code background image switching, fade style background image switching, control button, click the lower right corner with a dot to control image playback, full