diff --git a/packages/docusaurus/lib/default-theme/Navbar/index.js b/packages/docusaurus/lib/default-theme/Navbar/index.js
index 40ceb53821..db1b155a81 100644
--- a/packages/docusaurus/lib/default-theme/Navbar/index.js
+++ b/packages/docusaurus/lib/default-theme/Navbar/index.js
@@ -105,7 +105,7 @@ function Navbar(props) {
   };
 
   return (
-    <nav className="navbar navbar-fixed-top">
+    <nav className="navbar navbar-light navbar-fixed-top">
       <div className="navbar-inner">
         <div className="navbar-items">
           <div key="logo" className="navbar-item">
diff --git a/packages/docusaurus/lib/default-theme/Post/index.js b/packages/docusaurus/lib/default-theme/Post/index.js
index c50fa3b623..db1d78fd8b 100644
--- a/packages/docusaurus/lib/default-theme/Post/index.js
+++ b/packages/docusaurus/lib/default-theme/Post/index.js
@@ -54,12 +54,12 @@ function Post(props) {
         </div>
         <div className="avatar margin-bottom-md">
           {authorImageURL && (
-            <a href={authorURL} target="_blank" rel="noreferrer noopener">
-              <img
-                className="avatar-profile"
-                src={authorImageURL}
-                alt={author}
-              />
+            <a
+              className="avatar-photo-link"
+              href={authorURL}
+              target="_blank"
+              rel="noreferrer noopener">
+              <img className="avatar-photo" src={authorImageURL} alt={author} />
             </a>
           )}
           <div className="avatar-intro">
diff --git a/website/pages/index.js b/website/pages/index.js
index ffb3f6a925..e5faaa2a5b 100644
--- a/website/pages/index.js
+++ b/website/pages/index.js
@@ -190,7 +190,7 @@ function Home() {
                 <div className="avatar avatar-vertical margin-bottom-sm">
                   <img
                     alt={quote.name}
-                    className="avatar-profile"
+                    className="avatar-photo avatar-photo-xl"
                     src={`${siteConfig.baseUrl}${quote.thumbnail}`}
                   />
                   <div className="avatar-intro">