diff --git a/src/resources/css/style.css b/src/resources/css/style.css
index 94b9fb8..450e5ca 100644
--- a/src/resources/css/style.css
+++ b/src/resources/css/style.css
@@ -37,6 +37,29 @@
   cursor: default;
 }
 
+.external-links {
+  position: fixed;
+  bottom: 0.75rem;
+  right: 1rem;
+  display: flex;
+  gap: 0.4rem;
+  z-index: 10;
+}
+
+.link-btn {
+  padding: 0.25rem 0.6rem;
+  border-radius: 4px;
+  font-family: inherit;
+  font-size: 0.75rem;
+  font-weight: 600;
+  letter-spacing: 0.05em;
+  text-decoration: none;
+  background: rgba(255, 248, 220, 0.75);
+  color: #3b2a0e;
+  cursor: pointer;
+  transition: background 0.15s;
+}
+
 body {
   font-family: "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
   font-size: 16px;
@@ -81,7 +104,7 @@ h2 {
   background: rgba(255, 248, 220, 0.92);
   border-radius: 12px;
   padding: 1.5rem;
-  width: 220px;
+  width: 250px;
   display: flex;
   flex-direction: column;
   gap: 1rem;
diff --git a/src/templates/index.html b/src/templates/index.html
index 76fee01..7a389e3 100644
--- a/src/templates/index.html
+++ b/src/templates/index.html
@@ -19,6 +19,9 @@
       {% endif %}
     {% endfor %}
   </nav>
+  <nav class="external-links">
+    <a class="link-btn" href="https://www.green-planet.it/" target="_blank" rel="noopener">Green planet</a>
+  </nav>
 
   <header>
     <h1>3a</h1>