diff --git a/css/app.css b/css/app.css
index 8bee10e..eb6a2dc 100644
--- a/css/app.css
+++ b/css/app.css
@@ -212,6 +212,14 @@ nav, .card {
     left: 0;
 }
 
+#hidden-three {
+    width: 1em;
+    height: 1em;
+    position: fixed;
+    top: 0;
+    right: 0;
+}
+
 #hidden-two {
     width: 1em;
     height: 1em;
@@ -219,3 +227,11 @@ nav, .card {
     bottom: 0;
     right: 0;
 }
+
+#hidden-four {
+    width: 1em;
+    height: 1em;
+    position: fixed;
+    bottom: 0;
+    left: 0;
+}