.flex1{
  display: flex;
  justify-content: center;
  align-items: center;
  }
.flex2{
  display: flex;
  justify-content: space-between;
}
.flex3{
  display: flex;
  justify-content: flex-end;
}
.flex4{
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}
