Sub Bordures()
With Range("A8:Q" & Range("C8").End(xlDown).Row)
With .Borders(xlInsideVertical)
.LineStyle = 1: .Color = RGB(128, 128, 128)
End With
With .Borders(xlEdgeLeft)
.Weight = 3: .Color = RGB(128, 128, 128)
End With
With .Borders(xlEdgeRight)
.Weight = 3: .Color = RGB(128, 128, 128)
End With
End With
End Sub