final tweaks with save indicator

wwwroot/css/site.css

@@ -1,6 +1,7 @@
 html {
     font-size: 14px;
     height: 100%;
+    font-family:'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
 }
 
 @media (min-width: 768px) {
@@ -9,10 +10,6 @@ html {
     }
 }
 
-.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
-    box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
-}
-
 html {
     position: relative;
     min-height: 100%;
@@ -27,10 +24,28 @@ textarea {
     width: 100%;
     height: 100%;
     padding: 15px;
+    margin: 0;
+    resize: none;
     color: #444;
-    font-size: 16px;
+    font-size: 12px;
     font-family: Consolas;
     outline: none;
     position: absolute;
     box-sizing: border-box;
 }
+
+#saved-indicator {
+    position: fixed;
+    bottom: -40px;
+    right: 10px;
+    font-size: 12px;
+    background-color: green;
+    padding: 10px;
+    border-radius: 10px 10px 0 0;
+    color: #fff;
+    transition: bottom 0.2s;
+}
+
+#saved-indicator.show {
+    bottom: 0;
+}