.out {
 width:500px;
  height:500px;
  background: #552323;
  border-radius: 50%;
  overflow: hidden;
  position: relative;
}

.in {
  width:500px;
  height:100px;
  position: absolute;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  color: #ffffff;
}