diff --git a/src/styles/github-markdown.css b/src/styles/github-markdown.css
index cce4c083..a0835b0f 100644
--- a/src/styles/github-markdown.css
+++ b/src/styles/github-markdown.css
@@ -170,7 +170,7 @@ html.dark .markdown-body pre {
   margin: 0.67em 0;
   font-weight: 600;
   padding-bottom: 0.3em;
-  font-size: 1.8em;
+  font-size: 1.7em;
   border-bottom: 1px solid var(--color-border-muted);
 }
 
@@ -203,7 +203,8 @@ html.dark .markdown-body pre {
   border-style: none;
   max-width: 100%;
   box-sizing: content-box;
-  background-color: var(--color-canvas-default);
+  /* background-color: var(--color-canvas-default); */
+  background-color: white;
 }
 
 .markdown-body code,
@@ -353,6 +354,22 @@ html.dark .markdown-body pre {
   line-height: 1.25;
 }
 
+.markdown-body h1::before {
+  content: "# ";
+}
+
+.markdown-body h2::before {
+  content: "## ";
+}
+
+.markdown-body h3::before {
+  content: "### ";
+}
+
+.markdown-body h4::before {
+  content: "#### ";
+}
+
 .markdown-body h2 {
   font-weight: 600;
   padding-bottom: 0.3em;