diff --git a/book/theme/css/chrome.css b/book/theme/css/chrome.css
index 943bfe03ae..dcc1eb1dfd 100644
--- a/book/theme/css/chrome.css
+++ b/book/theme/css/chrome.css
@@ -318,7 +318,7 @@ ul#searchresults span.teaser em {
 .sidebar img {
     display: block;
     max-width: 70%;
-    margin: 0 auto;
+    margin: 20px auto;
 }
 .js .sidebar {
     transition: transform 0.3s; /* Animation: slide away */
@@ -474,7 +474,7 @@ ul#searchresults span.teaser em {
 }
 
 .content h3 {
-    font-size: 15px;
+    font-size: 20px;
     margin-top: 2.5em;
     margin-bottom: 0.8em;
     padding: 0 28px;
diff --git a/book/theme/css/general.css b/book/theme/css/general.css
index 89121cbb5e..d73c78ece6 100644
--- a/book/theme/css/general.css
+++ b/book/theme/css/general.css
@@ -16,7 +16,7 @@ body {
     font-size: 1rem;
     overflow-x: hidden;
     font-family: Lato, 'Helvetica Neue', 'Arial', sans-serif;
-    font-size: 14px;
+    font-size: 16px;
     font-weight: 300;
     -webkit-font-smoothing: antialiased;
     -moz-osx-font-smoothing: grayscale;
diff --git a/book/theme/index.hbs b/book/theme/index.hbs
index 5132e35e62..50150a9f9d 100644
--- a/book/theme/index.hbs
+++ b/book/theme/index.hbs
@@ -76,7 +76,8 @@
         </script>
 
         <nav id="sidebar" class="sidebar" aria-label="Table of contents">
-            <img src="https://manuel-calavera.github.io/images/logo.png" alt="">
+            <img 
+                src="data:image/svg+xml;base64,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" width="150" height="30" alt="Solana">
             {{#toc}}{{/toc}}
         </nav>