Add class to all main divs to make it easier to identify
Add class to all main divs to make it easier to identify

ScottKolo/suitesparse-matrix-collection-website,ScottKolo/suitesparse-matrix-collection-website,ScottKolo/UFSMC-Web,ScottKolo/UFSMC-Web,ScottKolo/UFSMC-Web,ScottKolo/suitesparse-matrix-collection-website,ScottKolo/suitesparse-matrix-collection-website,ScottKolo/suitesparse-matrix-collection-website