add beta watermark

src/components/Editor.tsx

@@ -65,7 +65,7 @@ class Editor extends React.Component<EditorProps> {
     render(): JSX.Element {
         const { i18n, onSessionChanged } = this.props;
         return (
-            <div className="h-100">
+            <div className="h-100 watermark">
                 <ResizeSensor onResize={(): void => this.editor?.resize()}>
                     <AceEditor
                         ref={this.editorRef}

src/index.scss

@@ -97,3 +97,15 @@ body {
 .terminal-padding {
     padding-left: 10px;
 }
+
+.watermark::after {
+    content: "";
+    background: url("/static/beta.png");
+    opacity: 0.03;
+    top: 0;
+    left: 0;
+    bottom: 0;
+    right: 0;
+    position: absolute;
+    pointer-events: none
+}