.wrap {
  height: 75px;
  margin: 100px auto 0;
  position: relative;
  width: 300px;
}

.elem {
  background-color: #febf04;
  border-radius: 100%;
  bottom: 0;
  display: block;
  height: 75px;
  left: 0;
  position: absolute;
  width: 75px;
}