diff --git a/app/assets/stylesheets/thredded-overrides.scss b/app/assets/stylesheets/thredded-overrides.scss
new file mode 100644
index 00000000..ce819e8a
--- /dev/null
+++ b/app/assets/stylesheets/thredded-overrides.scss
@@ -0,0 +1,10 @@
+@import "thredded";
+
+.thredded--main-container {
+  // The padding and max-width are handled by the app's container.
+  min-width: 80%;
+  padding: 0;
+  @include thredded-media-tablet-and-up {
+    padding: 0;
+  }
+}