Getting the button into the top right corner inside the div box

Question

I can\'t figure out how to get the [X] button into the top right corner of my custom css box.

Here\'s the result so far:

Answer 1

#button {
    line-height: 12px;
    width: 18px;
    font-size: 8pt;
    font-family: tahoma;
    margin-top: 1px;
    margin-right: 2px;
    position: absolute;
    top: 0;
    right: 0;
}