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Is this the form http://www.jotform.com/52445710880152 you are working on? Let us know which form it is if not this one.
From what I can see, it seems you are trying to construct a data grid using the TEXT(HTML) field.
This is possible to create in the TEXT HTML field using div and border tag to create grid like element in the form.
But I do suggest taking a look for more simpler and easy to use widget for the same purpose.
You can instead use the Data Grid Widget
Here is demo form you can check the data grid in used http://form.jotformpro.com/form/50551155278960
Let us know if you need further assistance.