diff --git a/doc/src/styles/capitalize.css b/doc/src/styles/capitalize.css
index a69393921d06..a1f82ec91472 100644
--- a/doc/src/styles/capitalize.css
+++ b/doc/src/styles/capitalize.css
@@ -1,6 +1,6 @@
-details summary>h2.large,
-details li>a>span,
+details summary > h2.large,
+details li > a > span,
 main h1,
-aside>p {
+aside > p {
   text-transform: capitalize;
 }
diff --git a/doc/src/styles/theme.css b/doc/src/styles/theme.css
index 16972359f4d0..2908ec89586f 100644
--- a/doc/src/styles/theme.css
+++ b/doc/src/styles/theme.css
@@ -14,7 +14,7 @@
 }
 
 /* Light mode colors. */
-:root[data-theme='light'] {
+:root[data-theme="light"] {
   --sl-color-accent-low: #d7d7d7;
   --sl-color-accent: #6b6b6b;
   --sl-color-accent-high: #323232;