excel vba borders
Dim wksWorksheet As Worksheet, rRange As Range
Set wksWorksheet = ThisWorkbook.Worksheets(1)
Set rRange = wksWorksheet.Range("A1:D10")
' All borders
With rRange.Borders
.LineStyle = xlContinuous
.Color = vbRed
.Weight = xlThin
End With
' Outside borders
rRange.BorderAround xlContinuous, xlMedium, xlColorIndexAutomatic
' Inside
With rRange.Borders.Item(xlInsideHorizontal)
.ColorIndex = 5
.LineStyle = xlContinuous
.Weight = xlThin
End With