diff --git a/public/assets/css/style.css b/public/assets/css/style.css
index 449c763..1858e41 100644
--- a/public/assets/css/style.css
+++ b/public/assets/css/style.css
@@ -212,3 +212,8 @@ body {
 .shadow-10-10-20-black {
     box-shadow: 10px 10px 20px black;
 }
+
+
+.shadow-15-15-30-black {
+    box-shadow: 15px 15px 30px black;
+}
diff --git a/public/index.html b/public/index.html
index 2d64793..fbf81b3 100644
--- a/public/index.html
+++ b/public/index.html
@@ -75,13 +75,13 @@
   <body class="bg-dark">
     <div id="loader"></div>
 
-    <button type="button" class="btn btn-danger btn-floating btn-lg" id="btn-back-to-top">
+    <button type="button" class="btn btn-danger btn-floating btn-lg shadow-10-10-20-black" id="btn-back-to-top">
       <i class="fas fa-arrow-up"></i>
     </button>
 
     <header class="mb-auto">
 
-      <nav class="navbar navbar-expand-lg fixed-top navbar-dark bg-dark shadow-10-10-20-black" aria-label="Main navigation">
+      <nav class="navbar navbar-expand-lg fixed-top navbar-dark bg-dark shadow-15-15-30-black" aria-label="Main navigation">
         <div class="container">
 
           <a class="navbar-brand justify-content-center float-md-start mb-0" href="/">
