#position-anchor #my-position-target-b {
  position-anchor: --my-position-anchor-b;
}

#position-anchor .target {
  position: absolute;
  bottom: anchor(top);
  left: anchor(right);
  position-anchor: --my-position-anchor-a;
}

#my-position-anchor-a {
  anchor-name: --my-position-anchor-a;
  margin-bottom: 3em;
}

#my-position-anchor-b {
  anchor-name: --my-position-anchor-b;
}