In the following sentence:
曾有朋友戏称,脱发已经成为了当代青少年担忧的最大问题!屏幕前的你,是否也在感概”头发都去哪儿了“?
I don't understand what 屏幕前的你 means. 屏幕 means "screen", but then I don't understand the part 前的你.
So what does the phrase and the whole sentence mean and how does it work grammatically?