Use full width excluding overflow scrollbar with “position: absolute”

Question

I would like to have a small red div with full width at a fixed top position, inside another div that has overflow: scroll. I hope the jsFiddle makes it clear:

Answer 1

HTML

    

        

    



    
foo
    
foo
    
foo
    
foo
​

CSS

* { margin: 0; padding: 0 }
body {
    padding-top: 30px;
}

div.main {
    height: 200px;
    width: 100%;
    overflow-y: scroll;
    position: absolute;
    z-index: 50;
    background: -webkit-gradient(linear, center top, center bottom, from(white), to(rgba(255,255,255,0)));
}

div.item {
    border: 1px solid black;
    margin: 20px;
    padding: 20px;
}

div.scroller {
    height: 20px;
    width: 100%;
    position: absolute;
    z-index: 100;
    overflow: hidden;
}

div.banner-wrapper {
    background: transparent;
    position: relative;
    height: 20px;
    overflow-y: scroll;
    left: 0;
    margin-right: -20px;
}
div.banner {
    height: 20px;
    background: -webkit-gradient(linear, center top, center bottom, from(white), to(rgba(255,255,255,0)));;
    margin-left: 20px;
    margin-right: 40px;
}

Development version: http://jsfiddle.net/mCYLm/13/
Final version: http://jsfiddle.net/mCYLm/14/

Works with zooming and variable viewport width.
! BUG: Scrollbar button from the right top is not accessable/clickable.

Tested in:

• IE6,7,8,9 (windows)
• FF11 (Windows)
• Google Chrome 18 (ubuntu)
• Safari 5.1 (OSX)