div css frame 遮罩
实现单击一个按钮，遮罩页面1,2,3的iframe框架，请高手帮忙
回复讨论(解决方案)
对遮罩在top 页面实现
对遮罩在top 页面实现 请问怎么写呢！我昨天晚上一晚上就是这样用的，可是一直测试不成功，麻烦高手提供一下代码
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