php - Edit a css file from the live website -

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so want develop mini website builder within website. have control panel users can edit text in websites, want each of html pages have own css file attached it. now, want user sees button saying "edit background color" prompted color picker , on hitting save, css file updated without them knowing css exists.

i know language can use make previous example happen. , if possible hint of code.

i appreciate answers, braulio :)

i didn't downvote informational purposes, reason downvoted due scope of question, language choose depends on platform running site on. , possible want in tons of different languages assuming platform supports them. easy solution check out .net languages c# ajax controls live updates without refreshes. again use ruby rails. or of in client side jquery , javascript send results server utilize php. broad question answer without writing whole thing nobody going do.


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