Private Sub Worksheet_Change(ByVal Target As Range)
    Application.ScreenUpdating = False
    Application.CutCopyMode = False
    Application.DisplayAlerts = False
Dim ff&, fif&
ff = Cells(Rows.Count, 8).End(xlUp).Row
D = Range("A1").Value
If Intersect(Target, Range("A1")) Is Nothing Then Exit Sub
   Set faf = Range("H1:H" & ff).Find(D)
    fif = faf.Row
      If fif > 1 Then
        Range("A1").Select
        With Selection.Font
            .Name = "Calibri"
            .Size = 24
        End With
      Else
       Range("A1").Select
        With Selection.Font
            .Name = "Calibri"
            .Size = 11
        End With
      End If
        Application.ScreenUpdating = True
        Application.CutCopyMode = True
        Application.DisplayAlerts = True
End Sub