work on ui

desktop_app/ui/assets/banner.txt

@@ -0,0 +1,7 @@
+
+                      _     
+                     | |    
+  _ __ ___   ___  ___| |__  
+ | '_ ` _ \ / _ \/ __| '_ \ 
+ | | | | | |  __/\__ \ | | |
+ |_| |_| |_|\___||___/_| |_|

desktop_app/ui/assets/pair_screen.tcss

@@ -0,0 +1,39 @@
+PairScreen {
+    align: center middle;
+}
+
+EffectLabel {
+    min-width: 50;
+    text-align: center;
+    text-style: bold;
+}
+
+#middle {
+    border: $success ascii;
+    width: 50;
+    height: 28;
+
+    padding: 0 1 1 1;
+
+    Static {
+        min-width: 100%;
+        text-align: center;
+    }
+
+    DataTable {
+        margin-top: 1;
+    }
+
+    LoadingIndicator {
+        height: 1;
+        margin-top: 1;
+    }
+
+    DataTable {
+        height: 5;
+    }
+
+    Button {
+        margin: 2 0 0 1;
+    }
+}