fix graphic interface again !!

backend/src/main/resources/get/index.html

@@ -12,7 +12,7 @@
 
     <nav class="navbar">
         <a href="index.html" class="nav-brand">
-            <img src="seal1.png" height="50" alt="🦭">
+            <img src="seal1.png" height="80" alt="🦭">
             CryptoSeals
         </a>
         <div class="menu-toggle" onclick="toggleMenu()">