Update less/tables.less

Possible typing.

Add @baseBorderRadius as value for some rules.

Add border-radius clearing for first and last td in the last tbody for table with tfoot.

less/tables.less

@@ -91,36 +91,45 @@ table {
   // For first th or td in the first row in the first thead or tbody
   thead:first-child tr:first-child th:first-child,
   tbody:first-child tr:first-child td:first-child {
-    .border-top-left-radius(4px);
+    .border-top-left-radius(@baseBorderRadius);
   }
   thead:first-child tr:first-child th:last-child,
   tbody:first-child tr:first-child td:last-child {
-    .border-top-right-radius(4px);
+    .border-top-right-radius(@baseBorderRadius);
   }
-  // For first th or td in the first row in the first thead or tbody
+  // For first th or td in the last row in the last thead or tbody
   thead:last-child tr:last-child th:first-child,
   tbody:last-child tr:last-child td:first-child,
   tfoot:last-child tr:last-child td:first-child {
-    .border-bottom-left-radius(4px);
+    .border-bottom-left-radius(@baseBorderRadius);
   }
   thead:last-child tr:last-child th:last-child,
   tbody:last-child tr:last-child td:last-child,
   tfoot:last-child tr:last-child td:last-child {
-    .border-bottom-right-radius(4px);
+    .border-bottom-right-radius(@baseBorderRadius);
+  }
+
+  // Clear border-radius for first and last td in the last row in the last tbody for table with tfoot
+  tfoot + tbody:last-child tr:last-child td:first-child {
+    .border-bottom-left-radius(0);
   }
+  tfoot + tbody:last-child tr:last-child td:last-child {
+    .border-bottom-right-radius(0);
+  }
+
 
   // Special fixes to round the left border on the first td/th
   caption + thead tr:first-child th:first-child,
   caption + tbody tr:first-child td:first-child,
   colgroup + thead tr:first-child th:first-child,
   colgroup + tbody tr:first-child td:first-child {
-    .border-top-left-radius(4px);
+    .border-top-left-radius(@baseBorderRadius);
   }
   caption + thead tr:first-child th:last-child,
   caption + tbody tr:first-child td:last-child,
   colgroup + thead tr:first-child th:last-child,
   colgroup + tbody tr:first-child td:last-child {
-    .border-top-right-radius(4px);
+    .border-top-right-radius(@baseBorderRadius);
   }
 
 }