body {
  background-color: #eeeeee;
}

.container {
  width: 1000px;
  height: 600px;
  background-color: #c9d6df;
  margin: 40px auto;
  border-radius: 40px;

  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: center;
  align-content: space-around;
}

.box {
  width: 45%;
  height: 100px;
  padding: 40px;
  border: 3px solid #333;
  border-radius: 20px;
  text-align: center;
  box-sizing: border-box;
  font-size: 32px;
  font-weight: bold;
}

.item1 { background-color: #ffcccc;
}

.item2 { background-color: #ccffcc;
}

.item3 { background-color: #ccccff;
}

.item4 { background-color: #fff0b3;
}