Fixes #12447: Properly reset borders on table cells in panels

dist/css/bootstrap.css

@@ -4757,6 +4757,31 @@ a.list-group-item-danger.active:focus {
 .panel-body {
   padding: 15px;
 }
+.panel-heading {
+  padding: 10px 15px;
+  border-bottom: 1px solid transparent;
+  border-top-left-radius: 3px;
+  border-top-right-radius: 3px;
+}
+.panel-heading > .dropdown .dropdown-toggle {
+  color: inherit;
+}
+.panel-title {
+  margin-top: 0;
+  margin-bottom: 0;
+  font-size: 16px;
+  color: inherit;
+}
+.panel-title > a {
+  color: inherit;
+}
+.panel-footer {
+  padding: 10px 15px;
+  background-color: #f5f5f5;
+  border-top: 1px solid #ddd;
+  border-bottom-right-radius: 3px;
+  border-bottom-left-radius: 3px;
+}
 .panel > .list-group {
   margin-bottom: 0;
 }
@@ -4865,63 +4890,30 @@ a.list-group-item-danger.active:focus {
 .panel > .table-responsive > .table-bordered > tfoot > tr > td:last-child {
   border-right: 0;
 }
-.panel > .table-bordered > thead > tr:first-child > th,
-.panel > .table-responsive > .table-bordered > thead > tr:first-child > th,
-.panel > .table-bordered > tbody > tr:first-child > th,
-.panel > .table-responsive > .table-bordered > tbody > tr:first-child > th,
-.panel > .table-bordered > tfoot > tr:first-child > th,
-.panel > .table-responsive > .table-bordered > tfoot > tr:first-child > th,
 .panel > .table-bordered > thead > tr:first-child > td,
 .panel > .table-responsive > .table-bordered > thead > tr:first-child > td,
 .panel > .table-bordered > tbody > tr:first-child > td,
 .panel > .table-responsive > .table-bordered > tbody > tr:first-child > td,
-.panel > .table-bordered > tfoot > tr:first-child > td,
+.panel > .table-bordered > thead > tr:first-child > th,
-.panel > .table-responsive > .table-bordered > tfoot > tr:first-child > td {
+.panel > .table-responsive > .table-bordered > thead > tr:first-child > th,
-  border-top: 0;
+.panel > .table-bordered > tbody > tr:first-child > th,
+.panel > .table-responsive > .table-bordered > tbody > tr:first-child > th {
+  border-bottom: 0;
 }
-.panel > .table-bordered > thead > tr:last-child > th,
-.panel > .table-responsive > .table-bordered > thead > tr:last-child > th,
-.panel > .table-bordered > tbody > tr:last-child > th,
-.panel > .table-responsive > .table-bordered > tbody > tr:last-child > th,
-.panel > .table-bordered > tfoot > tr:last-child > th,
-.panel > .table-responsive > .table-bordered > tfoot > tr:last-child > th,
-.panel > .table-bordered > thead > tr:last-child > td,
-.panel > .table-responsive > .table-bordered > thead > tr:last-child > td,
 .panel > .table-bordered > tbody > tr:last-child > td,
 .panel > .table-responsive > .table-bordered > tbody > tr:last-child > td,
 .panel > .table-bordered > tfoot > tr:last-child > td,
-.panel > .table-responsive > .table-bordered > tfoot > tr:last-child > td {
+.panel > .table-responsive > .table-bordered > tfoot > tr:last-child > td,
+.panel > .table-bordered > tbody > tr:last-child > th,
+.panel > .table-responsive > .table-bordered > tbody > tr:last-child > th,
+.panel > .table-bordered > tfoot > tr:last-child > th,
+.panel > .table-responsive > .table-bordered > tfoot > tr:last-child > th {
   border-bottom: 0;
 }
 .panel > .table-responsive {
   margin-bottom: 0;
   border: 0;
 }
-.panel-heading {
-  padding: 10px 15px;
-  border-bottom: 1px solid transparent;
-  border-top-left-radius: 3px;
-  border-top-right-radius: 3px;
-}
-.panel-heading > .dropdown .dropdown-toggle {
-  color: inherit;
-}
-.panel-title {
-  margin-top: 0;
-  margin-bottom: 0;
-  font-size: 16px;
-  color: inherit;
-}
-.panel-title > a {
-  color: inherit;
-}
-.panel-footer {
-  padding: 10px 15px;
-  background-color: #f5f5f5;
-  border-top: 1px solid #ddd;
-  border-bottom-right-radius: 3px;
-  border-bottom-left-radius: 3px;
-}
 .panel-group {
   margin-bottom: 20px;
 }

less/panels.less

@@ -18,6 +18,37 @@
   &:extend(.clearfix all);
 }
 
+// Optional heading
+.panel-heading {
+  padding: 10px 15px;
+  border-bottom: 1px solid transparent;
+  .border-top-radius((@panel-border-radius - 1));
+
+  > .dropdown .dropdown-toggle {
+    color: inherit;
+  }
+}
+
+// Within heading, strip any `h*` tag of its default margins for spacing.
+.panel-title {
+  margin-top: 0;
+  margin-bottom: 0;
+  font-size: ceil((@font-size-base * 1.125));
+  color: inherit;
+
+  > a {
+    color: inherit;
+  }
+}
+
+// Optional footer (stays gray in every modifier class)
+.panel-footer {
+  padding: 10px 15px;
+  background-color: @panel-footer-bg;
+  border-top: 1px solid @panel-inner-border;
+  .border-bottom-radius((@panel-border-radius - 1));
+}
+
 
 // List groups in panels
 //
@@ -126,12 +157,22 @@
         > td:last-child {
           border-right: 0;
         }
-        &:first-child > th,
+      }
-        &:first-child > td {
+    }
-          border-top: 0;
+    > thead,
+    > tbody {
+      > tr:first-child {
+        > td,
+        > th {
+          border-bottom: 0;
         }
-        &:last-child > th,
+      }
-        &:last-child > td {
+    }
+    > tbody,
+    > tfoot {
+      > tr:last-child {
+        > td,
+        > th {
           border-bottom: 0;
         }
       }
@@ -144,38 +185,6 @@
 }
 
 
-// Optional heading
-.panel-heading {
-  padding: 10px 15px;
-  border-bottom: 1px solid transparent;
-  .border-top-radius((@panel-border-radius - 1));
-
-  > .dropdown .dropdown-toggle {
-    color: inherit;
-  }
-}
-
-// Within heading, strip any `h*` tag of its default margins for spacing.
-.panel-title {
-  margin-top: 0;
-  margin-bottom: 0;
-  font-size: ceil((@font-size-base * 1.125));
-  color: inherit;
-
-  > a {
-    color: inherit;
-  }
-}
-
-// Optional footer (stays gray in every modifier class)
-.panel-footer {
-  padding: 10px 15px;
-  background-color: @panel-footer-bg;
-  border-top: 1px solid @panel-inner-border;
-  .border-bottom-radius((@panel-border-radius - 1));
-}
-
-
 // Collapsable panels (aka, accordion)
 //
 // Wrap a series of panels in `.panel-group` to turn them into an accordion with