The table can be used for listing definitions, phone numbers, addresses, questions and answers - or for learning some French vocabulary!
If more cells are needed, the easiest would be to view it in SD within the narrowest viewport (or disable the breakpoints and make the viewport wider) and add some .inner-left and .inner-right containers. Then check in the Element tree that they appear in the right sequence. For deleting cells, do it the same way. Remember that the 'inner...' elements work in pairs, so you will need the same number of the yellow and the purple ones.