.parent {
  position: relative; /* Establishes positioning context */
  width: 200px;
  height: 100px;
  border: 2px solid teal;
}

.child {
  position: absolute; /* Positions relative to the parent */
  left: 70%; /* Positions the child's left edge at the parent's right edge */
  top: 0;
  width: 50px;
  height: 50px;
  background-color: blue;
}