diff --git a/common/common.scss b/common/common.scss
index e96c190..70f8e2c 100644
--- a/common/common.scss
+++ b/common/common.scss
@@ -1,4 +1,5 @@
 @import "common/foundation/variables";
+@import "sidebar";
 
 .d-toc-regular {
   [data-theme-toc] {
diff --git a/scss/chat.scss b/scss/chat.scss
new file mode 100644
index 0000000..33fe3cf
--- /dev/null
+++ b/scss/chat.scss
@@ -0,0 +1,3 @@
+.d-toc-timeline .topic-chat-float-container {
+  z-index: z("header");
+}
diff --git a/scss/sidebar.scss b/scss/sidebar.scss
new file mode 100644
index 0000000..03d0073
--- /dev/null
+++ b/scss/sidebar.scss
@@ -0,0 +1,6 @@
+.discourse-sidebar .d-toc-regular .d-toc-article .row {
+  width: 75%;
+  @media screen and (max-width: 1200px) {
+    width: 65%;
+  }
+}