diff --git a/styles/editor.css b/styles/editor.css
index e20ab15..30cb7ad 100644
--- a/styles/editor.css
+++ b/styles/editor.css
@@ -1,5 +1,5 @@
 .code-highlight {
-  background-color: #ffff00aa;
+  background-color: #ffff0055;
 }
 
 .breakpoint-glyph {
diff --git a/ui/header.tsx b/ui/header.tsx
index 49d212f..fb28043 100644
--- a/ui/header.tsx
+++ b/ui/header.tsx
@@ -33,7 +33,7 @@ export const Header = (props: { langId: string; langName: string }) => {
     <div style={{ flex: 1, textAlign: "right", paddingRight: 8 }}>
       <a
         href={NOTES_LINK(props.langId)}
-        title="View implementatio notes for this esolang"
+        title="View implementation notes for this esolang"
       >
         <Button minimal icon={<Icon icon="info-sign" />} />
       </a>