Sub CRENEAUX()
Dim LR As Long, L As Long
Application.ScreenUpdating = False
With [COLOR=rgb(184, 49, 47)][B]Worksheets("Sheet0")[/B][/COLOR]
LR = .Cells(.Rows.Count, 1).End(xlUp).Row
.UsedRange.Borders.LineStyle = xlNone
For L = 1 To LR
If .Cells(L, 1) & .Cells(L, 2) & .Cells(L, 3) <> .Cells(L, 1).Offset(1) & .Cells(L, 2).Offset(1) & .Cells(L, 3).Offset(1) Then
With .Cells(L, 1).Resize(, 29).Borders(xlEdgeBottom)
.LineStyle = xlContinuous
.Weight = xlThick
End With
End If
Next L
End With
Application.ScreenUpdating = True
End Sub