diff --git a/src/components/article.tsx b/src/components/article.tsx
index d6c57db..cba4845 100644
--- a/src/components/article.tsx
+++ b/src/components/article.tsx
@@ -109,6 +109,7 @@ class Article extends React.Component<ArticleProps, ArticleState> {
             webview.addEventListener("new-window", this.popUpHandler)
             webview.addEventListener("will-navigate", this.navigationHandler)
             this.webview = webview
+            webview.focus()
         }
     }
     componentDidUpdate = (prevProps: ArticleProps) => {
diff --git a/src/components/menu.tsx b/src/components/menu.tsx
index 56077e6..0972227 100644
--- a/src/components/menu.tsx
+++ b/src/components/menu.tsx
@@ -5,7 +5,7 @@ import { Nav, INavLink, INavLinkGroup } from "office-ui-fabric-react/lib/Nav"
 import { SourceGroup } from "../scripts/models/group"
 import { SourceState, RSSSource } from "../scripts/models/source"
 import { ALL } from "../scripts/models/feed"
-import { AnimationClassNames, Stack } from "@fluentui/react"
+import { AnimationClassNames, Stack, FocusZone, FocusZoneDirection } from "@fluentui/react"
 
 export type MenuProps = {
     status: boolean,
@@ -26,7 +26,7 @@ export type MenuProps = {
 export class Menu extends React.Component<MenuProps> {
     countOverflow = (count: number) => count >= 1000 ? "999+" : String(count)
 
-    getItems = (): INavLinkGroup[] => [
+    getLinkGroups = (): INavLinkGroup[] => [
         {
             links: [
                 {
@@ -46,28 +46,28 @@ export class Menu extends React.Component<MenuProps> {
                     url: null
                 }
             ]
+        },
+        {
+            name: intl.get("menu.subscriptions"),
+            links: this.props.groups.filter(g => g.sids.length > 0).map((g, i) => {
+                if (g.isMultiple) {
+                    let sources = g.sids.map(sid => this.props.sources[sid])
+                    return {
+                        name: g.name,
+                        ariaLabel: this.countOverflow(sources.map(s => s.unreadCount).reduce((a, b) => a + b, 0)),
+                        key: "g-" + i,
+                        url: null,
+                        isExpanded: g.expanded,
+                        onClick: () => this.props.selectSourceGroup(g, "g-" + i),
+                        links: sources.map(this.getSource)
+                    }
+                } else {
+                    return this.getSource(this.props.sources[g.sids[0]])
+                }
+            })
         }
     ]
 
-    getGroups = (): INavLinkGroup[] => [{
-        links: this.props.groups.filter(g => g.sids.length > 0).map((g, i) => {
-            if (g.isMultiple) {
-                let sources = g.sids.map(sid => this.props.sources[sid])
-                return {
-                    name: g.name,
-                    ariaLabel: this.countOverflow(sources.map(s => s.unreadCount).reduce((a, b) => a + b, 0)),
-                    key: "g-" + i,
-                    url: null,
-                    isExpanded: g.expanded,
-                    onClick: () => this.props.selectSourceGroup(g, "g-" + i),
-                    links: sources.map(this.getSource)
-                }
-            } else {
-                return this.getSource(this.props.sources[g.sids[0]])
-            }
-        }
-    )}]
-
     getSource = (s: RSSSource): INavLink => ({
         name: s.name,
         ariaLabel: this.countOverflow(s.unreadCount),
@@ -106,6 +106,10 @@ export class Menu extends React.Component<MenuProps> {
         )
       };
 
+    _onRenderGroupHeader = (group: INavLinkGroup): JSX.Element => {
+        return <p className={"subs-header " + AnimationClassNames.slideDownIn10}>{group.name}</p>;
+    }
+
     render() {
         return this.props.status && (
             <div className="menu-container" onClick={this.props.toggleMenu} style={{display: this.props.display ? "block" : "none"}}>
@@ -116,15 +120,11 @@ export class Menu extends React.Component<MenuProps> {
                     </div>
                     <div className="nav-wrapper">
                         <Nav 
+                            onRenderGroupHeader={this._onRenderGroupHeader}
                             onRenderLink={this._onRenderLink}
-                            groups={this.getItems()} 
-                            selectedKey={this.props.selected} />
-                        <p className={"subs-header " + AnimationClassNames.slideDownIn10}>{intl.get("menu.subscriptions")}</p>
-                        <Nav 
+                            groups={this.getLinkGroups()} 
                             selectedKey={this.props.selected}
-                            onRenderLink={this._onRenderLink}
-                            onLinkExpandClick={(event, item) => this.props.updateGroupExpansion(event, item.key, this.props.selected)}
-                            groups={this.getGroups()} />
+                            onLinkExpandClick={(event, item) => this.props.updateGroupExpansion(event, item.key, this.props.selected)} />
                     </div>
                 </div>
             </div>
diff --git a/src/scripts/i18n/zh-CN.json b/src/scripts/i18n/zh-CN.json
index 953834e..874c9f8 100644
--- a/src/scripts/i18n/zh-CN.json
+++ b/src/scripts/i18n/zh-CN.json
@@ -56,7 +56,7 @@
         "copyTitle": "复制标题",
         "copyURL": "复制链接",
         "copy": "复制",
-        "search": "使用Google搜索“{text}”",
+        "search": "使用 Google 搜索“{text}”",
         "view": "视图",
         "cardView": "卡片视图",
         "listView": "列表视图",
diff --git a/src/scripts/models/item.ts b/src/scripts/models/item.ts
index 7ee4c20..bb3c034 100644
--- a/src/scripts/models/item.ts
+++ b/src/scripts/models/item.ts
@@ -1,6 +1,6 @@
 import * as db from "../db"
 import intl = require("react-intl-universal")
-import { rssParser, domParser, htmlDecode, ActionStatus, AppThunk } from "../utils"
+import { domParser, htmlDecode, ActionStatus, AppThunk } from "../utils"
 import { RSSSource } from "./source"
 import { FeedActionTypes, INIT_FEED, LOAD_MORE } from "./feed"
 import Parser = require("@yang991178/rss-parser")
@@ -152,7 +152,7 @@ export function fetchItems(): AppThunk<Promise<void>> {
                 ((s.lastFetched ? s.lastFetched.getTime() : 0) + (s.fetchFrequency || 0) * 60000) <= timenow
             )
             for (let source of sources) {
-                let promise = RSSSource.fetchItems(source, rssParser)
+                let promise = RSSSource.fetchItems(source)
                 promise.finally(() => dispatch(fetchItemsIntermediate()))
                 promises.push(promise)
             }
diff --git a/src/scripts/models/source.ts b/src/scripts/models/source.ts
index 3a3aed6..48cea54 100644
--- a/src/scripts/models/source.ts
+++ b/src/scripts/models/source.ts
@@ -1,7 +1,7 @@
 import Parser = require("@yang991178/rss-parser")
 import intl = require("react-intl-universal")
 import * as db from "../db"
-import { rssParser, fetchFavicon, ActionStatus, AppThunk, parseRSS } from "../utils"
+import { fetchFavicon, ActionStatus, AppThunk, parseRSS } from "../utils"
 import { RSSItem, insertItems, ItemActionTypes, FETCH_ITEMS, MARK_READ, MARK_UNREAD, MARK_ALL_READ } from "./item"
 import { SourceGroup } from "./group"
 import { saveSettings } from "./app"
@@ -28,16 +28,16 @@ export class RSSSource {
         this.lastFetched = new Date()
     }
 
-    async fetchMetaData(parser: Parser) {
-        let feed = await parseRSS(this.url)
-        if (!this.name) {
-            if (feed.title) this.name = feed.title.trim()
-            this.name = this.name || intl.get("sources.untitled")
+    static async fetchMetaData(source: RSSSource) {
+        let feed = await parseRSS(source.url)
+        if (!source.name) {
+            if (feed.title) source.name = feed.title.trim()
+            source.name = source.name || intl.get("sources.untitled")
         }
-        let domain = this.url.split("/").slice(0, 3).join("/")
+        let domain = source.url.split("/").slice(0, 3).join("/")
         try {
             let f = await fetchFavicon(domain)
-            if (f !== null) this.iconurl = f
+            if (f !== null) source.iconurl = f
         } finally {
             return feed
         }
@@ -75,7 +75,7 @@ export class RSSSource {
         })
     }
 
-    static async fetchItems(source: RSSSource, parser: Parser) {
+    static async fetchItems(source: RSSSource) {
         let feed = await parseRSS(source.url)
         db.sdb.update({ sid: source.sid }, { $set: { lastFetched: new Date() } })
         return await this.checkItems(source, feed.items)
@@ -236,7 +236,7 @@ export function addSource(url: string, name: string = null, batch = false): AppT
         if (app.sourceInit) {
             dispatch(addSourceRequest(batch))
             let source = new RSSSource(url, name)
-            return source.fetchMetaData(rssParser)
+            return RSSSource.fetchMetaData(source)
                 .then(feed => {
                     return dispatch(insertSource(source))
                         .then(inserted => {
diff --git a/src/scripts/settings.ts b/src/scripts/settings.ts
index e18b513..23a85e2 100644
--- a/src/scripts/settings.ts
+++ b/src/scripts/settings.ts
@@ -1,6 +1,6 @@
 import { remote, ipcRenderer } from "electron"
 import { ViewType } from "./models/page"
-import { IPartialTheme, loadTheme, values } from "@fluentui/react"
+import { IPartialTheme, loadTheme } from "@fluentui/react"
 import locales from "./i18n/_locales"
 import Store = require("electron-store")
 import { schemaTypes } from "./config-schema"
@@ -51,7 +51,7 @@ export const setDefaultView = (viewType: ViewType) => {
 }
 
 const lightTheme: IPartialTheme = { 
-    defaultFontStyle: { fontFamily: '"Source Han Sans SC Regular", "Microsoft YaHei", sans-serif' } 
+    defaultFontStyle: { fontFamily: '"Segoe UI", "Source Han Sans SC Regular", "Microsoft YaHei", sans-serif' } 
 }
 const darkTheme: IPartialTheme = {
     ...lightTheme,
diff --git a/src/scripts/utils.ts b/src/scripts/utils.ts
index 210ba64..d697d73 100644
--- a/src/scripts/utils.ts
+++ b/src/scripts/utils.ts
@@ -17,7 +17,7 @@ export type AppThunk<ReturnType = void> = ThunkAction<
 export type AppDispatch = ThunkDispatch<RootState, undefined, AnyAction>
 
 import Parser = require("@yang991178/rss-parser")
-export const rssParser = new Parser({
+const rssParser = new Parser({
     customFields: {
         item: ["thumb", "image", ["content:encoded", "fullContent"]] as Parser.CustomFieldItem[]
     }