Fix <strong> and <b> font weights.

Pure CSS defaulted them to 'bolder', which is wrong.

Change-Id: Iac8b527f81d1d9cb4c93b301d6eda76641f7a3b7
diff --git a/src/main/resources/META-INF/resources/cms2/base.css b/src/main/resources/META-INF/resources/cms2/base.css
index c041364..f3a49fb 100644
--- a/src/main/resources/META-INF/resources/cms2/base.css
+++ b/src/main/resources/META-INF/resources/cms2/base.css
@@ -41,6 +41,11 @@
   font-weight: var(--bold-font-weight);
 }
 
+html b,
+html strong {
+  font-weight: var(--bold-font-weight);
+}
+
 nav ol,
 nav ul {
   list-style: none;