Dynamically adjust Line background width (Lyrics)

With Line Background on lyrics, it would be great if the margin or width can be adjusted depending on the length of the text in the box.
Reason for that is there are case where a slide will have just 2 words and the next one more than 2.

It will be nice if the width or margin can auto adjust itself when it's a short or long sentence to reduce width or margin and avoid having a huge dead space on each side and keep it compact