hiding html tags

[mrjameer]

i want to build a cms,in such a manner that the client who dont know php can update the content( can change text of left navbar,right navbar,center content by entering his own choice in a form of admin control panel) and upload images(banners,ads) etc...how to do it.whether i have to store css,html in db or i create a separate .css file and implement it in php script.guide me which one i approach.if i store the css in db and retrieve the css,html divs in textarea from db,for updations the html tags should be hided but not ignored and display the 'text' only in textareas.so that he can delete or update those text..

thanks
mrjameer