body {
  margin: 0;
  height: 100vh;
  background-color: #eee;
}
* {
  border: 1px solid;
}
.flex {
  display: flex;
}
.baiSe {
  background-color: white;
}
.flex1 {
  flex: 1;
}
.column {
  flex-direction: column;
}
.row {
  flex-direction: row;
}
.hongSe {
  background-color: rgb(0, 167, 69)}
.lanSe {
  background-color: aqua;
}
.shenlanSe{}