Position

img {
  width: 100px;
  height: 100px;
  border: 8px solid white;
  border-radius: 50%;
  position: relative;
}
#first {

}
#second {
  left: -50px;
}
#third {
  left: -100px;
}


img {
  width: 100px;
  height: 100px;
  border: 8px solid white;
  border-radius: 50%;
  position: relative;
}
#first {
  z-index: 3;
}
#second {
  left: -50px;
  z-index: 2;
}
#third {
  left: -100px;
  z-index: 1;
}
