Merge branch 'main' of https://github.com/type-ruby/type-ruby.github.io

Author: yhk1038

src/pages/index.module.css

@@ -189,7 +189,7 @@
 }
 
 .whatIsItem p strong {
-  color: initial;
+  color: var(--ifm-font-color-base);
   font-weight: 900;
 }