Question

I am trying to construct a layout in my “app-view” div where the “leftPane” has a fixed with and the “rightPane’s” width extends with the browser width (percentage). Is this possible with CSS (no Javascript)? Below are my basic styles for the layout in the div.

#app-view
{
    width: 100%;
    height: 400px;
}

#leftPane
{
    float: left;
    width: 33.33%;
    max-width: 250px;
    height: 400px;
    background: blue;
}

#rightPane
{
    float: left;
    width: 66.66%;
    height: 400px;
    background: green;
}

Answer 1

You can use left and right on #rightPane instead of width. You also need to make #app-view positioned relatively and both panes absolute.

#app-view
{
    width: 100%;
    height: 400px;
    position: relative;
}

#leftPane, #rightPane 
{
    height: 100%;
    position: absolute;
}

#leftPane
{
    width: 250px;
    background: blue;
}

#rightPane
{
    left: 250px;
    right: 0;
    background: green;
}

JSFiddle