Make Div on right side fill out all available space

Question

I want to create two divs beside each other, however I want the one on the left side to be 300px, and the right one to take up the remaining amount on the screen. How would that

Answer 1

Here's something for newer browsers (not IE):

CSS:

#container {
    display: box;
}

#left {
    width: 400px;
}

#right {
    box-flex: 1;
}

​HTML:

    
Left
    
Right
​

Demo: http://jsfiddle.net/N5zhH/1/