How can I position my div at the bottom of its container?

Answer 1

You can indeed align the box to the bottom without using position:absolute if you know the height of the #container using the text alignment feature of inline-block elements.

Here you can see it in action.

This is the code:

#container {
    /* So the #container most have a fixed height */
    height: 300px;
    line-height: 300px;
    background:Red;
}

#container > * {
    /* Restore Line height to Normal */
    line-height: 1.2em;
}

#copyright {
    display:inline-block;
    vertical-align:bottom;
    width:100%; /* Let it be a block */
    background:green;
}