Styled the admin button and added the button for come back to the game

public/sass/_header.scss

@@ -22,6 +22,13 @@ header {
 
         cursor: pointer;
     }
+
+    .redirect-button {
+        position: absolute;
+        left: 5%;
+
+        width: 10vw;
+    }
 }
 
 @media (max-width: 991.98px) {
@@ -44,4 +51,15 @@ header {
             }
         }
     }
+}
+
+@media (max-width: 576px) {
+
+    header {
+
+        .redirect-button {
+            width: 20vw;
+            position: initial;
+        }
+    }
 }