Design verbreitern geht nicht, Help!!!

table.edit_main_table{width: 100% !important;}
td.edit_main_tr{width: 100% !important;}
table.edit_second_table{width: 100% !important;}
td.edit_header_full{width: 100% !important;}
td.edit_header_full table{width: 100% !important;}
table.edit_third_table{width: 100% !important;}
td.edit_navi_headbg{width: 15% !important;}
table.edit_rechts_tabelle{width: 100% !important;}
td.edit_rechts_bottom{width: 15% !important;}
td.edit_rechts_cbg{width:100%;}