.rectangle{
  width: 48vw;
  background-color: black;
  position: sticky;
  right: 50px;
  bottom: 100px;
  left: 50%;
  min-height: 100px;
  border-radius: 10px;
}
.circle{
  background-color: red;
  border-radius: 50%;
  height: 100px;
  width: 100px;
  position: absolute;
  top: -50%;
  left: 12%;
}