Unlink a line with its Underline or Strikethrough

Hello.,

I have a some lnes of underline text which I am using as a divider between the lines. Instead of making separate box or multiple lines, I have used Underline because its easy to implement.

I am stuck at one positon. I want to give a text inset of 2 mm at the left and right. On doing that, the text also underline also moves with the text (as that is the way it should be). I want the underline to remain where it is but and inset or indent the text from both the sides. 

Any tricks or suggestions? Thanks

I have attached a screentshot.