diff --git a/packages/redux-devtools-rtk-query-monitor/src/components/QueryForm.tsx b/packages/redux-devtools-rtk-query-monitor/src/components/QueryForm.tsx
index 917aebe1..d0996c11 100644
--- a/packages/redux-devtools-rtk-query-monitor/src/components/QueryForm.tsx
+++ b/packages/redux-devtools-rtk-query-monitor/src/components/QueryForm.tsx
@@ -127,6 +127,7 @@ export class QueryForm extends React.PureComponent<
         {({ styling, base16Theme }) => {
           return (
             <form
+              id="rtk-query-monitor-query-selection-form"
               action="#"
               onSubmit={this.handleSubmit}
               {...styling('queryForm')}
diff --git a/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewActions.tsx b/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewActions.tsx
index 26cfca2a..083d0896 100644
--- a/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewActions.tsx
+++ b/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewActions.tsx
@@ -1,8 +1,10 @@
 import { createSelector, Selector } from '@reduxjs/toolkit';
 import React, { ReactNode, PureComponent } from 'react';
 import { Action, AnyAction } from 'redux';
+import { QueryPreviewTabs } from '../types';
+import { renderTabPanelButtonId, renderTabPanelId } from '../utils/a11y';
 import { emptyRecord, identity } from '../utils/object';
-import { TreeView } from './TreeView';
+import { TreeView, TreeViewProps } from './TreeView';
 
 export interface QueryPreviewActionsProps {
   isWideLayout: boolean;
@@ -11,6 +13,12 @@ export interface QueryPreviewActionsProps {
 
 const keySep = ' - ';
 
+const rootProps: TreeViewProps['rootProps'] = {
+  'aria-labelledby': renderTabPanelButtonId(QueryPreviewTabs.actions),
+  id: renderTabPanelId(QueryPreviewTabs.actions),
+  role: 'tabpanel',
+};
+
 export class QueryPreviewActions extends PureComponent<QueryPreviewActionsProps> {
   selectFormattedActions: Selector<
     AnyAction[],
@@ -74,6 +82,7 @@ export class QueryPreviewActions extends PureComponent<QueryPreviewActionsProps>
 
     return (
       <TreeView
+        rootProps={rootProps}
         data={this.selectFormattedActions(actionsOfQuery)}
         isWideLayout={isWideLayout}
         shouldExpandNode={this.shouldExpandNode}
diff --git a/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewApi.tsx b/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewApi.tsx
index d6e01492..e5858369 100644
--- a/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewApi.tsx
+++ b/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewApi.tsx
@@ -1,7 +1,8 @@
 import React, { ReactNode, PureComponent } from 'react';
-import { ApiStats, RtkQueryApiState } from '../types';
+import { ApiStats, QueryPreviewTabs, RtkQueryApiState } from '../types';
 import { StyleUtilsContext } from '../styles/createStylingFromTheme';
-import { TreeView } from './TreeView';
+import { TreeView, TreeViewProps } from './TreeView';
+import { renderTabPanelId, renderTabPanelButtonId } from '../utils/a11y';
 
 export interface QueryPreviewApiProps {
   apiStats: ApiStats | null;
@@ -9,6 +10,12 @@ export interface QueryPreviewApiProps {
   isWideLayout: boolean;
 }
 
+const rootProps: TreeViewProps['rootProps'] = {
+  'aria-labelledby': renderTabPanelButtonId(QueryPreviewTabs.apiConfig),
+  id: renderTabPanelId(QueryPreviewTabs.apiConfig),
+  role: 'tabpanel',
+};
+
 export class QueryPreviewApi extends PureComponent<QueryPreviewApiProps> {
   shouldExpandApiStateNode = (
     keyPath: (string | number)[],
@@ -33,7 +40,7 @@ export class QueryPreviewApi extends PureComponent<QueryPreviewApiProps> {
     return (
       <StyleUtilsContext.Consumer>
         {({ styling }) => (
-          <article {...styling('tabContent')}>
+          <article {...rootProps} {...styling('tabContent')}>
             <h2>{apiState.config.reducerPath}</h2>
             <TreeView
               before={<h3>State</h3>}
diff --git a/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewData.tsx b/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewData.tsx
index 33dfd0ab..cab37563 100644
--- a/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewData.tsx
+++ b/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewData.tsx
@@ -1,20 +1,26 @@
 import React, { ReactNode, PureComponent } from 'react';
-import { RtkResourceInfo } from '../types';
-import { TreeView } from './TreeView';
+import { QueryPreviewTabs, RtkResourceInfo } from '../types';
+import { renderTabPanelButtonId, renderTabPanelId } from '../utils/a11y';
+import { TreeView, TreeViewProps } from './TreeView';
 
 export interface QueryPreviewDataProps {
   data: RtkResourceInfo['state']['data'];
   isWideLayout: boolean;
 }
+
+const rootProps: TreeViewProps['rootProps'] = {
+  'aria-labelledby': renderTabPanelButtonId(QueryPreviewTabs.data),
+  id: renderTabPanelId(QueryPreviewTabs.data),
+  role: 'tabpanel',
+};
+
 export class QueryPreviewData extends PureComponent<QueryPreviewDataProps> {
   shouldExpandNode = (
     keyPath: (string | number)[],
     value: unknown,
     layer: number
   ): boolean => {
-    const lastKey = keyPath[keyPath.length - 1];
-
-    return layer <= 1 && lastKey !== 'query' && lastKey !== 'mutation';
+    return layer <= 1;
   };
 
   render(): ReactNode {
@@ -22,6 +28,7 @@ export class QueryPreviewData extends PureComponent<QueryPreviewDataProps> {
 
     return (
       <TreeView
+        rootProps={rootProps}
         data={data}
         isWideLayout={isWideLayout}
         shouldExpandNode={this.shouldExpandNode}
diff --git a/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewHeader.tsx b/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewHeader.tsx
index ef9ddc1d..427cd963 100644
--- a/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewHeader.tsx
+++ b/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewHeader.tsx
@@ -1,6 +1,7 @@
 import React, { ReactNode } from 'react';
 import { StyleUtilsContext } from '../styles/createStylingFromTheme';
 import { QueryPreviewTabs, TabOption } from '../types';
+import { renderTabPanelButtonId, renderTabPanelId } from '../utils/a11y';
 import { emptyArray } from '../utils/object';
 
 export interface QueryPreviewHeaderProps {
@@ -28,7 +29,11 @@ export class QueryPreviewHeader extends React.Component<QueryPreviewHeaderProps>
           <div {...styling('previewHeader')}>
             <div {...styling('tabSelector')}>
               {tabs.map((tab) => (
-                <div
+                <button
+                  type="button"
+                  id={renderTabPanelButtonId(tab.value)}
+                  aria-selected={tab.value === selectedTab}
+                  role={'tab'}
                   onClick={() => this.handleTabClick(tab)}
                   key={tab.value}
                   {...styling(
@@ -42,7 +47,7 @@ export class QueryPreviewHeader extends React.Component<QueryPreviewHeaderProps>
                   <span>
                     {renderTabLabel ? renderTabLabel(tab) : tab.label}
                   </span>
-                </div>
+                </button>
               ))}
             </div>
           </div>
diff --git a/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewInfo.tsx b/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewInfo.tsx
index f2bfff3a..cbd15a7b 100644
--- a/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewInfo.tsx
+++ b/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewInfo.tsx
@@ -1,11 +1,12 @@
 import { createSelector, Selector } from '@reduxjs/toolkit';
 import { QueryStatus } from '@reduxjs/toolkit/dist/query';
 import React, { ReactNode, PureComponent } from 'react';
-import { RtkResourceInfo, RTKStatusFlags } from '../types';
+import { QueryPreviewTabs, RtkResourceInfo, RTKStatusFlags } from '../types';
+import { renderTabPanelButtonId, renderTabPanelId } from '../utils/a11y';
 import { formatMs } from '../utils/formatters';
 import { identity } from '../utils/object';
 import { getQueryStatusFlags } from '../utils/rtk-query';
-import { TreeView } from './TreeView';
+import { TreeView, TreeViewProps } from './TreeView';
 
 type QueryTimings = {
   startedAt: string;
@@ -23,6 +24,12 @@ type FormattedQuery = {
   | { query: RtkResourceInfo['state'] }
 );
 
+const rootProps: TreeViewProps['rootProps'] = {
+  'aria-labelledby': renderTabPanelButtonId(QueryPreviewTabs.queryinfo),
+  id: renderTabPanelId(QueryPreviewTabs.queryinfo),
+  role: 'tabpanel',
+};
+
 export interface QueryPreviewInfoProps {
   resInfo: RtkResourceInfo;
   isWideLayout: boolean;
@@ -97,6 +104,7 @@ export class QueryPreviewInfo extends PureComponent<QueryPreviewInfoProps> {
 
     return (
       <TreeView
+        rootProps={rootProps}
         data={formattedQuery}
         isWideLayout={isWideLayout}
         shouldExpandNode={this.shouldExpandNode}
diff --git a/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewSubscriptions.tsx b/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewSubscriptions.tsx
index 11446e34..16868176 100644
--- a/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewSubscriptions.tsx
+++ b/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewSubscriptions.tsx
@@ -1,6 +1,15 @@
 import React, { ReactNode, PureComponent } from 'react';
-import { RtkQueryApiState } from '../types';
-import { TreeView } from './TreeView';
+import { QueryPreviewTabs, RtkQueryApiState } from '../types';
+import { renderTabPanelButtonId, renderTabPanelId } from '../utils/a11y';
+import { TreeView, TreeViewProps } from './TreeView';
+
+const rootProps: TreeViewProps['rootProps'] = {
+  'aria-labelledby': renderTabPanelButtonId(
+    QueryPreviewTabs.querySubscriptions
+  ),
+  id: renderTabPanelId(QueryPreviewTabs.querySubscriptions),
+  role: 'tabpanel',
+};
 
 export interface QueryPreviewSubscriptionsProps {
   subscriptions: RtkQueryApiState['subscriptions'][keyof RtkQueryApiState['subscriptions']];
@@ -12,7 +21,11 @@ export class QueryPreviewSubscriptions extends PureComponent<QueryPreviewSubscri
     const { subscriptions } = this.props;
 
     return (
-      <TreeView data={subscriptions} isWideLayout={this.props.isWideLayout} />
+      <TreeView
+        rootProps={rootProps}
+        data={subscriptions}
+        isWideLayout={this.props.isWideLayout}
+      />
     );
   }
 }
diff --git a/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewTags.tsx b/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewTags.tsx
index ba576d78..3b19729a 100644
--- a/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewTags.tsx
+++ b/packages/redux-devtools-rtk-query-monitor/src/components/QueryPreviewTags.tsx
@@ -1,11 +1,18 @@
 import React, { ReactNode, PureComponent } from 'react';
-import { RtkQueryTag } from '../types';
-import { TreeView } from './TreeView';
+import { QueryPreviewTabs, RtkQueryTag } from '../types';
+import { renderTabPanelButtonId, renderTabPanelId } from '../utils/a11y';
+import { TreeView, TreeViewProps } from './TreeView';
 
 interface QueryPreviewTagsState {
   data: { tags: RtkQueryTag[] };
 }
 
+const rootProps: TreeViewProps['rootProps'] = {
+  'aria-labelledby': renderTabPanelButtonId(QueryPreviewTabs.queryTags),
+  id: renderTabPanelId(QueryPreviewTabs.queryTags),
+  role: 'tabpanel',
+};
+
 export interface QueryPreviewTagsProps {
   tags: RtkQueryTag[];
   isWideLayout: boolean;
@@ -26,6 +33,8 @@ export class QueryPreviewTags extends PureComponent<
   render(): ReactNode {
     const { isWideLayout, tags } = this.props;
 
-    return <TreeView data={tags} isWideLayout={isWideLayout} />;
+    return (
+      <TreeView rootProps={rootProps} data={tags} isWideLayout={isWideLayout} />
+    );
   }
 }
diff --git a/packages/redux-devtools-rtk-query-monitor/src/components/TreeView.tsx b/packages/redux-devtools-rtk-query-monitor/src/components/TreeView.tsx
index d02c0349..091f18f2 100644
--- a/packages/redux-devtools-rtk-query-monitor/src/components/TreeView.tsx
+++ b/packages/redux-devtools-rtk-query-monitor/src/components/TreeView.tsx
@@ -22,6 +22,9 @@ export interface TreeViewProps
   before?: ReactNode;
   after?: ReactNode;
   children?: ReactNode;
+  rootProps?: Partial<
+    Omit<React.HTMLAttributes<HTMLDivElement>, 'className' | 'style'>
+  >;
 }
 
 export class TreeView extends React.PureComponent<TreeViewProps> {
@@ -80,13 +83,14 @@ export class TreeView extends React.PureComponent<TreeViewProps> {
       keyPath,
       shouldExpandNode,
       hideRoot,
+      rootProps,
     } = this.props;
 
     return (
       <StyleUtilsContext.Consumer>
         {({ styling, invertTheme, base16Theme }) => {
           return (
-            <div {...styling('treeWrapper')}>
+            <div {...rootProps} {...styling('treeWrapper')}>
               {before}
               <JSONTree
                 keyPath={keyPath}
diff --git a/packages/redux-devtools-rtk-query-monitor/src/styles/createStylingFromTheme.ts b/packages/redux-devtools-rtk-query-monitor/src/styles/createStylingFromTheme.ts
index 2b7e9f79..f33935f4 100644
--- a/packages/redux-devtools-rtk-query-monitor/src/styles/createStylingFromTheme.ts
+++ b/packages/redux-devtools-rtk-query-monitor/src/styles/createStylingFromTheme.ts
@@ -217,6 +217,8 @@ const getSheetFromColorMap = (map: ColorMap) => {
       padding: '0 8px',
       display: 'inline-flex',
       alignItems: 'center',
+      boxShadow: 'none',
+      outline: 'none',
       color: map.TEXT_COLOR,
       'border-style': 'solid',
       'border-width': '1px',
diff --git a/packages/redux-devtools-rtk-query-monitor/src/utils/a11y.ts b/packages/redux-devtools-rtk-query-monitor/src/utils/a11y.ts
new file mode 100644
index 00000000..e92a799a
--- /dev/null
+++ b/packages/redux-devtools-rtk-query-monitor/src/utils/a11y.ts
@@ -0,0 +1,9 @@
+import { QueryPreviewTabs } from '../types';
+
+export function renderTabPanelId(value: QueryPreviewTabs): string {
+  return `rtk-query-monitor-tab-panel-${value}`;
+}
+
+export function renderTabPanelButtonId(value: QueryPreviewTabs): string {
+  return renderTabPanelId(value) + '-button';
+}