diff --git a/404.html b/404.html
index 4c8498f..3611460 100644
--- a/404.html
+++ b/404.html
@@ -81,6 +81,7 @@
       color: white;
       background-color: #20282a;
       outline: none;
+      box-shadow: 0 0 0 1px #20282a;
     }
     
     header nav a:before {
diff --git a/about/index.html b/about/index.html
index 0fada8f..45fdc35 100644
--- a/about/index.html
+++ b/about/index.html
@@ -81,6 +81,7 @@
       color: white;
       background-color: #20282a;
       outline: none;
+      box-shadow: 0 0 0 1px #20282a;
     }
     
     header nav a:before {
diff --git a/index.html b/index.html
index 1af9031..068a1f6 100644
--- a/index.html
+++ b/index.html
@@ -82,6 +82,7 @@
       color: white;
       background-color: #20282a;
       outline: none;
+      box-shadow: 0 0 0 1px #20282a;
     }
     
     header nav a:before {
diff --git a/posts/index.html b/posts/index.html
index ad0fc76..d617746 100644
--- a/posts/index.html
+++ b/posts/index.html
@@ -81,6 +81,7 @@
       color: white;
       background-color: #20282a;
       outline: none;
+      box-shadow: 0 0 0 1px #20282a;
     }
     
     header nav a:before {
diff --git a/posts/site-redesign/index.html b/posts/site-redesign/index.html
index dd69ca2..a3adcaa 100644
--- a/posts/site-redesign/index.html
+++ b/posts/site-redesign/index.html
@@ -81,6 +81,7 @@
       color: white;
       background-color: #20282a;
       outline: none;
+      box-shadow: 0 0 0 1px #20282a;
     }
     
     header nav a:before {
diff --git a/presentations/blockchain/index.html b/presentations/blockchain/index.html
index b9e070f..b27ead4 100644
--- a/presentations/blockchain/index.html
+++ b/presentations/blockchain/index.html
@@ -81,6 +81,7 @@
       color: white;
       background-color: #20282a;
       outline: none;
+      box-shadow: 0 0 0 1px #20282a;
     }
     
     header nav a:before {
diff --git a/presentations/index.html b/presentations/index.html
index eb93c9a..392e2b0 100644
--- a/presentations/index.html
+++ b/presentations/index.html
@@ -81,6 +81,7 @@
       color: white;
       background-color: #20282a;
       outline: none;
+      box-shadow: 0 0 0 1px #20282a;
     }
     
     header nav a:before {
diff --git a/projects/index.html b/projects/index.html
index 56f1e3e..e43a71b 100644
--- a/projects/index.html
+++ b/projects/index.html
@@ -81,6 +81,7 @@
       color: white;
       background-color: #20282a;
       outline: none;
+      box-shadow: 0 0 0 1px #20282a;
     }
     
     header nav a:before {