How do i make a div stay on top of other div's while scrolling the page?

[devace]

Pls help me. I've tried.This is my code presentlyHTML\[code\] <div id="header"><!--beggining of header--> </div><!--end of header-->\[/code\]CSS \[code\] #header { width: auto; height: 100px; background-color: #F0F; border-bottom-style: solid; border-bottom-color: #000; position: fixed; }\[/code\]SORRY. THIS IS MY FIRST TIME USING THIS STE. I CANT POST THE CODE.BUT SEE THE FULL HTML HERE