diff --git a/404.html b/404.html
index c7b108d8..41873f23 100644
--- a/404.html
+++ b/404.html
@@ -69,8 +69,21 @@
             padding: 0 0 1.5rem;
             text-align: center;
         }
+        @keyframes pulse {
+            0% {
+                background-color: #CCC;
+            }
+            50% {
+                background-color: #AAA;
+            }
+            100% {
+                background-color: #CCC;
+            }
+        }
         .donate-button {
             -webkit-appearance: none;
+            animation: pulse 2.5s infinite;
+            animation-timing-function: ease-in-out;
             background: #CCC;
             border: 0;
             border-radius: 1.5rem;
diff --git a/google6e31748efdb240e2.html b/google6e31748efdb240e2.html
new file mode 100644
index 00000000..a3d0d470
--- /dev/null
+++ b/google6e31748efdb240e2.html
@@ -0,0 +1 @@
+google-site-verification: google6e31748efdb240e2.html
\ No newline at end of file
diff --git a/index.html b/index.html
index c7b108d8..41873f23 100644
--- a/index.html
+++ b/index.html
@@ -69,8 +69,21 @@
             padding: 0 0 1.5rem;
             text-align: center;
         }
+        @keyframes pulse {
+            0% {
+                background-color: #CCC;
+            }
+            50% {
+                background-color: #AAA;
+            }
+            100% {
+                background-color: #CCC;
+            }
+        }
         .donate-button {
             -webkit-appearance: none;
+            animation: pulse 2.5s infinite;
+            animation-timing-function: ease-in-out;
             background: #CCC;
             border: 0;
             border-radius: 1.5rem;
diff --git a/src/header.html b/src/header.html
index c5d5c739..6979c0d6 100644
--- a/src/header.html
+++ b/src/header.html
@@ -69,8 +69,21 @@
             padding: 0 0 1.5rem;
             text-align: center;
         }
+        @keyframes pulse {
+            0% {
+                background-color: #CCC;
+            }
+            50% {
+                background-color: #AAA;
+            }
+            100% {
+                background-color: #CCC;
+            }
+        }
         .donate-button {
             -webkit-appearance: none;
+            animation: pulse 2.5s infinite;
+            animation-timing-function: ease-in-out;
             background: #CCC;
             border: 0;
             border-radius: 1.5rem;