diff --git a/src/App.tsx b/src/App.tsx
index ff8a0bd..eb3cc95 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,12 +1,12 @@
 import React from "react";
-import Editor from "./Editor";
+import Explorer from "./Explorer";
 import styles from "./App.module.css";
 import "./reset.css";
 
 function App({}) {
   return (
     <div className={styles.App}>
-      <Editor />
+      <Explorer />
     </div>
   );
 }
diff --git a/src/Editor.css b/src/Editor.module.css
similarity index 77%
rename from src/Editor.css
rename to src/Editor.module.css
index bdb9465..b5aa502 100644
--- a/src/Editor.css
+++ b/src/Editor.module.css
@@ -1,13 +1,4 @@
-.Editor {
-  display: flex;
-  flex-direction: row;
-  height: 100%;
-  width: 100%;
-}
-
-.Editor-textwrapper {
-  flex: 1;
-  flex-basis: 0;
+.EditorTextWrapper {
   position: relative;
   background: white;
   font-family: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Consolas,
@@ -17,8 +8,8 @@
   text-align: initial;
 }
 
-.Editor-textarea,
-.Editor-underlay {
+.EditorTextArea,
+.EditorUnderlay {
   font-family: inherit;
   font-weight: inherit;
   font-size: inherit;
@@ -28,7 +19,7 @@
   line-height: normal;
 }
 
-.Editor-textarea {
+.EditorTextArea {
   position: absolute;
   top: 0;
   bottom: 0;
@@ -43,7 +34,7 @@
   outline: none;
 }
 
-.Editor-underlay {
+.EditorUnderlay {
   width: 100%;
   height: 100%;
   pointer-events: none;
@@ -52,7 +43,7 @@
   word-wrap: break-word;
   overflow-y: scroll;
 
-  .highlighted {
+  .EditorHighlighted {
     background: #ffff00;
   }
 }
diff --git a/src/Editor.module.css.d.ts b/src/Editor.module.css.d.ts
new file mode 100644
index 0000000..930d01a
--- /dev/null
+++ b/src/Editor.module.css.d.ts
@@ -0,0 +1,4 @@
+export const EditorTextWrapper: string;
+export const EditorTextArea: string;
+export const EditorUnderlay: string;
+export const EditorHighlighted: string;
diff --git a/src/Editor.tsx b/src/Editor.tsx
index dff073b..27d3816 100644
--- a/src/Editor.tsx
+++ b/src/Editor.tsx
@@ -1,68 +1,25 @@
-import React, { ReactNode, useEffect, useMemo, useRef, useState } from "react";
-import "./Editor.css";
+import React, { useEffect, useRef } from "react";
 import { Highlight } from "./highlight";
 import { buildShadow } from "./shadow";
-import OrgAst, { OrgNodeReference } from "./OrgAst";
-import { parse_org } from "../../organic/target/wasm32-unknown-unknown/js/wasm";
+import styles from "./Editor.module.css";
 
-const default_org_source: string = `* Welcome to the Organic Ast Explorer!
-
-Type your Org [fn:1] source in this text box, and it will be parsed by Organic [fn:2] that has been compiled into wasm and embedded in this page. The resulting AST will be rendered to the right.
-
-In the AST on the right, you can:
-
-1. Click on an AST node to highlight the corresponding portion of the Org source on the left.
-2. Expand/Collapse the children, properties, and standard properties.
-
-* Footnotes
-
-[fn:1] https://orgmode.org/
-
-[fn:2] https://code.fizz.buzz/talexander/organic
-`;
-
-function Editor({ defaultValue = default_org_source }) {
+interface EditorProps {
+  value: string;
+  setValue: Function;
+  highlights: Highlight[];
+  clearHighlights: Function;
+}
+function Editor({
+  value,
+  setValue,
+  highlights,
+  clearHighlights,
+}: EditorProps): React.ReactNode {
   function handleChange(event: React.ChangeEvent<HTMLTextAreaElement>) {
     setValue(event.target.value);
     clearHighlights();
   }
 
-  const [value, setValue] = useState(defaultValue);
-
-  const [highlights, setHighlights] = useState<Array<Highlight>>([]);
-
-  const astTree = useMemo(() => {
-    const astTree = parse_org(value);
-    console.log(JSON.stringify(astTree));
-    return astTree;
-  }, [value]);
-
-  function setHighlight(nodes: OrgNodeReference[]) {
-    let new_highlights = nodes.map((node: OrgNodeReference) => {
-      return new Highlight(node.start - 1, node.end - 1);
-    });
-    new_highlights.sort(function (a, b) {
-      if (a.start < b.start) return -1;
-      if (a.start > b.start) return 1;
-      return 0;
-    });
-    setHighlights(new_highlights);
-  }
-
-  function addHighlight(start: number, end: number) {
-    let new_highlights = [...highlights, new Highlight(start, end)];
-    new_highlights.sort(function (a, b) {
-      if (a.start < b.start) return -1;
-      if (a.start > b.start) return 1;
-      return 0;
-    });
-    setHighlights(new_highlights);
-  }
-
-  function clearHighlights() {
-    setHighlights([]);
-  }
-
   const textAreaRef = useRef<HTMLTextAreaElement>(null);
   const shadowRef = useRef<HTMLDivElement>(null);
   function onTextAreaScroll() {
@@ -78,26 +35,18 @@ function Editor({ defaultValue = default_org_source }) {
   }, []);
 
   return (
-    <div className="Editor">
-      <div className="Editor-textwrapper">
-        <textarea
-          ref={textAreaRef}
-          onChange={handleChange}
-          className="Editor-textarea"
-          value={value}
-          onScroll={onTextAreaScroll}
-        />
-        <div ref={shadowRef} className="Editor-underlay">
-          {buildShadow(highlights, value)}
-          <br />
-        </div>
-      </div>
-      <OrgAst
-        setHighlight={setHighlight}
-        clearHighlights={clearHighlights}
+    <div className={styles.EditorTextWrapper}>
+      <textarea
+        ref={textAreaRef}
+        onChange={handleChange}
+        className={styles.EditorTextArea}
         value={value}
-        astTree={astTree}
+        onScroll={onTextAreaScroll}
       />
+      <div ref={shadowRef} className={styles.EditorUnderlay}>
+        {buildShadow(highlights, value)}
+        <br />
+      </div>
     </div>
   );
 }
diff --git a/src/Explorer.module.css b/src/Explorer.module.css
new file mode 100644
index 0000000..a858ccd
--- /dev/null
+++ b/src/Explorer.module.css
@@ -0,0 +1,11 @@
+.Explorer {
+  display: flex;
+  flex-direction: row;
+  height: 100%;
+  width: 100%;
+
+  > * {
+    flex: 1;
+    flex-basis: 0;
+  }
+}
diff --git a/src/Explorer.module.css.d.ts b/src/Explorer.module.css.d.ts
new file mode 100644
index 0000000..88c9463
--- /dev/null
+++ b/src/Explorer.module.css.d.ts
@@ -0,0 +1 @@
+export const Explorer: string;
diff --git a/src/Explorer.tsx b/src/Explorer.tsx
new file mode 100644
index 0000000..996e557
--- /dev/null
+++ b/src/Explorer.tsx
@@ -0,0 +1,83 @@
+import React, { useMemo, useState } from "react";
+import styles from "./Explorer.module.css";
+import { Highlight } from "./highlight";
+import OrgAst, { OrgNodeReference } from "./OrgAst";
+import { parse_org } from "../../organic/target/wasm32-unknown-unknown/js/wasm";
+import Editor from "./Editor";
+
+const default_org_source: string = `* Welcome to the Organic Ast Explorer!
+
+Type your Org [fn:1] source in this text box, and it will be parsed by Organic [fn:2] that has been compiled into wasm and embedded in this page. The resulting AST will be rendered to the right.
+
+In the AST on the right, you can:
+
+1. Click on an AST node to highlight the corresponding portion of the Org source on the left.
+2. Expand/Collapse the children, properties, and standard properties.
+
+* Footnotes
+
+[fn:1] https://orgmode.org/
+
+[fn:2] https://code.fizz.buzz/talexander/organic
+`;
+
+interface ExplorerProps {
+  defaultValue?: string;
+}
+function Explorer({ defaultValue = default_org_source }: ExplorerProps) {
+  const [value, setValue] = useState(defaultValue);
+
+  const [highlights, setHighlights] = useState<Array<Highlight>>([]);
+
+  const astTree = useMemo(() => {
+    const astTree = parse_org(value);
+    console.log(JSON.stringify(astTree));
+    return astTree;
+  }, [value]);
+
+  function setHighlight(nodes: OrgNodeReference[]) {
+    let new_highlights = nodes.map((node: OrgNodeReference) => {
+      return new Highlight(node.start - 1, node.end - 1);
+    });
+    new_highlights.sort(function (a, b) {
+      if (a.start < b.start) return -1;
+      if (a.start > b.start) return 1;
+      return 0;
+    });
+    setHighlights(new_highlights);
+  }
+
+  function addHighlight(start: number, end: number) {
+    let new_highlights = [...highlights, new Highlight(start, end)];
+    new_highlights.sort(function (a, b) {
+      if (a.start < b.start) return -1;
+      if (a.start > b.start) return 1;
+      return 0;
+    });
+    setHighlights(new_highlights);
+  }
+
+  function clearHighlights() {
+    setHighlights([]);
+  }
+
+
+  return (
+    <div className={styles.Explorer}>
+      <Editor
+        value={value}
+        setValue={setValue}
+        highlights={highlights}
+        clearHighlights={clearHighlights}
+      />
+      <OrgAst
+        setHighlight={setHighlight}
+        clearHighlights={clearHighlights}
+        value={value}
+        astTree={astTree}
+      />
+    </div>
+  );
+}
+
+export default Explorer;
diff --git a/src/OrgAst.module.css b/src/OrgAst.module.css
index c4c5eb9..7dc10e6 100644
--- a/src/OrgAst.module.css
+++ b/src/OrgAst.module.css
@@ -1,5 +1,4 @@
 .OrgAst {
-  flex: 1;
   background: #eeeeee;
   padding: 5px;
   overflow: auto;
diff --git a/src/shadow.tsx b/src/shadow.tsx
index a24cf5f..763d7c8 100644
--- a/src/shadow.tsx
+++ b/src/shadow.tsx
@@ -1,5 +1,6 @@
-import React, { ReactNode, useState } from "react";
+import React, { ReactNode } from "react";
 import { Highlight } from "./highlight";
+import styles from "./Editor.module.css";
 
 function buildShadow(highlights: Highlight[], text: string): ReactNode[] {
   let output: ReactNode[] = [];
@@ -22,7 +23,7 @@ function buildShadow(highlights: Highlight[], text: string): ReactNode[] {
     } else if (state == ShadowState.Highlight && !thisCharHighlighted) {
       // End the span
       output.push(
-        <span key={i} className="highlighted">
+        <span key={i} className={styles.EditorHighlighted}>
           {buffer}
         </span>,
       );
@@ -37,7 +38,7 @@ function buildShadow(highlights: Highlight[], text: string): ReactNode[] {
       output.push(buffer);
     } else if (state == ShadowState.Highlight) {
       output.push(
-        <span key={i} className="highlighted">
+        <span key={i} className={styles.EditorHighlighted}>
           {buffer}
         </span>,
       );