Issue with inline fields if one of them is empty

I’m displaying a several “set” of field like “product/description/cost” as a table
First and second field has css “float:left” to do that, but when one of field “cost” is empty the conscutive “product” field shift
to the row above.

How can avoid this behaviour?

Drupal version: 


Source: https://www.drupal.org/taxonomy/term/3/feed