diff --git a/src/theme.css b/src/theme.css
index cc47d1a..a5caa4b 100644
--- a/src/theme.css
+++ b/src/theme.css
@@ -50,6 +50,11 @@
     background-color: var(--color-bg);
   }
 
+  :where(h1, h2, h3, h4, h5, h6) {
+    margin: 0;
+    padding: 0;
+  }
+
   #root {
     width: 100%;
     height: 100%;