Pseudo-classes 2

div {
  min-height: 300px;
}

img {
  float: left;
  width: 32%;
  margin-right: 2%;
}


div {
  min-height: 300px;
}
img {
  float: left;
  width: 32%;
  margin-right: 2%;
}
img:last-child {
  margin-right: 0;
}
