modif comtabilite

user/plugins/problems/scss/_panels.scss

@@ -0,0 +1,23 @@
+// Panels
+.panel {
+  border: $border-width solid $border-color;
+  border-radius: $border-radius;
+  display: flex;
+  flex-direction: column;
+
+  .panel-header,
+  .panel-footer {
+    flex: 0 0 auto;
+    padding: $layout-spacing-lg;
+  }
+
+  .panel-nav {
+    flex: 0 0 auto;
+  }
+
+  .panel-body {
+    flex: 1 1 auto;
+    overflow-y: auto;
+    padding: 0 $layout-spacing-lg;
+  }
+}