css

.button {

width: 150px;

height: 80px;

}

.wrapper .button-wrapper {

position: relative;

}

.button {

position: absolute;

}

.wrapper .button-wrapper:last-child .button {

bottom: 0;

right: 0;

}

.button::after {

  content: "";

  width: 10px;

  height: 10px;

  border-radius: 50%;

  background-color: red;

  position: absolute;

  right: 70px;

  bottom: -5px;

}