.flex {
    display: flex;
  }
  
  .wrap {
    flex-wrap: wrap;
  }
  
  .flexuno {
    flex: 1;
  }
  
  .justifyc {
    justify-content: center;
  }
  
  .alignc {
    align-items: center;
  }
  
  .column {
    flex-direction: column;
  }
  
  .row {
    flex-direction: row;
  }
  
  .flex_end {
    justify-content: flex-end;
  }
  
  .align_end {
    align-items: flex-end;
  }