Codecademy Sample Solution: Codeyear What does it move relative to?

/* sample solution to style.css */

/* a border for each div so you can see what's going on */

#parent{
    border:1px solid black;
    height: 100px;
    width: 100px;
    margin-left:100px;
    position: static;
}

#child{
    position:absolute;
    left: 1em;
}