That depends what you mean by "positioning".
Assuming you're using
absolute
positioning, you can specify any of the
top
,
left
,
bottom
, and
right
properties. So to position an element 20px from the bottom left of its container:
.container {
position: relative;
}
.child {
position: absolute;
bottom: 20px;
left: 20px;
}
Demo[
^]