.divl {
  width: 300px;
  height: 150px;
  border: 5px solid pink;
}

.divl2 {
  width: 300px;
  height: 150px;
  border: 5px solid pink;
  padding: 10px;
}

.divl3 {
  width: 300px;
  height: 150px;
  border: 5px solid pink;
  padding: 10px;
  margin: 5px;
}

.div {
  width: 300px;
  height: 150px;
  border: 5px solid red;
  padding: 10px;
  margin: 5px;
  box-sizing: border-box;
}