#container {
  background-color: black;
  position: relative;
  margin: 5px auto;
  padding: 5px;
  width: 400px;
  height: 400px;
    overflow: hidden;
}
.circle {
    border-radius: 50%;
}

#blockRed {
  width: 50px;
  height: 50px;
  background-color: #DC143C;
  position: absolute;
  bottom: 0;
  right: 0;
  margin-bottom: 330px;
  margin-right: 190px;
}

#blockOrange {
    width: 165px;
    height: 165px;
    background-color: orange;
    position: absolute;
      bottom: 0;
    right: 0;
    margin-bottom: 150px;
    margin-right: 170px;
}
#blockPurple {
    width: 300px;
    height: 300px;
    background-color: #6A5ACD;
    position: absolute;
    bottom: 0;
    right: 0;
    margin-bottom: 175px;
    margin-right: -140px;
}
#blockBlue {
  width: 320px;
  height: 320px;
  background-color: #6495ED;
  border-radius: 50%;
  position: absolute;
  bottom: 0;
  right: 0;
  margin-bottom: -160px;
  margin-right: -70px;
}