diff --git a/articles/admin.py b/articles/admin.py
index 65180f2..1d23ea5 100644
--- a/articles/admin.py
+++ b/articles/admin.py
@@ -41,11 +41,13 @@ class ArticleAdmin(admin.ModelAdmin):
         ),
         (
             "Content",
+            {"fields": ("content",)},
+        ),
+        (
+            "Custom CSS",
             {
-                "fields": (
-                    "content",
-                    "custom_css",
-                )
+                "fields": ("custom_css",),
+                "classes": ("collapse",),
             },
         ),
     ]
diff --git a/articles/static/admin_articles.css b/articles/static/admin_articles.css
index 7a76432..2f7862d 100644
--- a/articles/static/admin_articles.css
+++ b/articles/static/admin_articles.css
@@ -1,13 +1,14 @@
 #id_content, #id_custom_css {
     font-family: "JetBrains Mono", monospace;
+    min-height: 30em;
+    resize: vertical;
 }
 
 #id_content {
     width: calc(100% - 1em);
     height: 44.5em;
-    resize: vertical;
 }
 
-label[for=id_content] {
+label[for=id_content], label[for=id_custom_css] {
     display: none;
 }