diff --git a/application.tsx b/application.tsx
index b4997ee..bd5333e 100644
--- a/application.tsx
+++ b/application.tsx
@@ -8,6 +8,7 @@ import {importFromStackprof} from './import/stackprof'
 import {Profile} from './profile'
 import {Flamechart} from './flamechart'
 import { FlamechartView } from './flamechart-view'
+import { FontFamily, FontSize } from './style'
 
 const enum SortOrder {
   CHRONO,
@@ -21,6 +22,14 @@ interface ApplicationState {
   sortOrder: SortOrder
 }
 
+export class Toolbar extends ReloadableComponent<{}, ApplicationState> {
+  render() {
+    return <div className={css(style.toolbar)}>
+      speedscope
+    </div>
+  }
+}
+
 export class Application extends ReloadableComponent<{}, ApplicationState> {
   constructor() {
     super()
@@ -86,6 +95,7 @@ export class Application extends ReloadableComponent<{}, ApplicationState> {
     const flamechartToView = sortOrder == SortOrder.CHRONO ? flamechart : sortedFlamechart
 
     return <div onDrop={this.onDrop} onDragOver={this.onDragOver} className={css(style.root)}>
+      <Toolbar />
       {flamechartToView &&
         <FlamechartView ref={this.flamechartRef} flamechart={flamechartToView} />}
     </div>
@@ -96,7 +106,19 @@ const style = StyleSheet.create({
   root: {
     width: '100vw',
     height: '100vh',
-    overflow: 'hidden'
+    overflow: 'hidden',
+    display: 'flex',
+    flexDirection: 'column',
+    position: 'relative',
+  },
+  toolbar: {
+    height: 18,
+    background: 'black',
+    color: 'white',
+    textAlign: 'center',
+    fontFamily: FontFamily.MONOSPACE,
+    fontSize: FontSize.TITLE,
+    lineHeight: '18px'
   }
 })
 
diff --git a/dev.html b/dev.html
index 2a91528..cfad930 100644
--- a/dev.html
+++ b/dev.html
@@ -4,7 +4,7 @@
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <meta http-equiv="X-UA-Compatible" content="ie=edge">
-  <title>SpeedScope</title>
+  <title>speedscope</title>
 	<link rel="stylesheet" href="reset.css">
   </style>
 </head>
diff --git a/flamechart-style.ts b/flamechart-style.ts
index f162bb2..f225ff2 100644
--- a/flamechart-style.ts
+++ b/flamechart-style.ts
@@ -1,22 +1,8 @@
 import {StyleSheet} from 'aphrodite'
+import { FontFamily, FontSize, Colors } from './style'
 
 const HOVERTIP_PADDING = 2
 
-
-export enum FontFamily {
-  MONOSPACE = "Courier, monospace"
-}
-
-export enum FontSize {
-  LABEL = 10
-}
-
-export enum Colors {
-  MEDIUM_GRAY = "#BDBDBD",
-  LIGHT_GRAY = "#C4C4C4"
-}
-
-
 export namespace Sizes {
   export const MINIMAP_HEIGHT = 100
   export const TOOLTIP_WIDTH_MAX = 300
@@ -46,6 +32,9 @@ export const style = StyleSheet.create({
     paddingRight: HOVERTIP_PADDING,
     maxWidth: Sizes.TOOLTIP_WIDTH_MAX,
   },
+  hoverCount: {
+    color: '#6FCF97'
+  },
   clip: {
     overflow: 'hidden'
   },
diff --git a/flamechart-view.tsx b/flamechart-view.tsx
index 78dd2fa..698b58a 100644
--- a/flamechart-view.tsx
+++ b/flamechart-view.tsx
@@ -13,7 +13,8 @@ import { atMostOnceAFrame } from "./utils";
 import { rectangleBatchRenderer, RectangleBatchRendererProps } from "./rectangle-batch-renderer"
 import { FlamechartMinimapView } from "./flamechart-minimap-view"
 
-import { style, Sizes, FontSize, FontFamily } from './flamechart-style'
+import { style, Sizes } from './flamechart-style'
+import { FontSize, FontFamily } from './style'
 
 interface FlamechartFrameLabel {
   configSpaceBounds: Rect
@@ -81,6 +82,7 @@ const DEVICE_PIXEL_RATIO = window.devicePixelRatio
 interface FlamechartPanZoomViewProps {
   flamechart: Flamechart
   setNodeHover: (node: CallTreeNode | null, logicalViewSpaceMouse: Vec2) => void
+  configSpaceViewportRect: Rect
   setConfigSpaceViewportRect: (rect: Rect) => void
 }
 
@@ -94,12 +96,10 @@ export class FlamechartPanZoomView extends ReloadableComponent<FlamechartPanZoom
   overlayCanvas: HTMLCanvasElement | null = null
   overlayCtx: CanvasRenderingContext2D | null = null
 
-  configSpaceViewportRect = new Rect()
   labels: FlamechartFrameLabel[] = []
   hoveredLabel: FlamechartFrameLabel | null = null
 
   private setConfigSpaceViewportRect(r: Rect) {
-    this.configSpaceViewportRect = r
     this.props.setConfigSpaceViewportRect(r)
   }
 
@@ -174,7 +174,7 @@ export class FlamechartPanZoomView extends ReloadableComponent<FlamechartPanZoom
 
   private configSpaceToPhysicalViewSpace() {
     return AffineTransform.betweenRects(
-      this.configSpaceViewportRect,
+      this.props.configSpaceViewportRect,
       new Rect(new Vec2(0, 0), this.physicalViewSize())
     )
   }
@@ -219,6 +219,7 @@ export class FlamechartPanZoomView extends ReloadableComponent<FlamechartPanZoom
     const ctx = this.overlayCtx
     if (!ctx) return
     this.resizeOverlayCanvasIfNeeded()
+    if (this.props.configSpaceViewportRect.isEmpty()) return
 
     const configToPhysical = this.configSpaceToPhysicalViewSpace()
 
@@ -286,7 +287,7 @@ export class FlamechartPanZoomView extends ReloadableComponent<FlamechartPanZoom
     const oldWidth = this.canvas.width
     const oldHeight = this.canvas.height
 
-    if (this.configSpaceViewportRect.isEmpty()) {
+    if (this.props.configSpaceViewportRect.isEmpty()) {
       this.setConfigSpaceViewportRect(new Rect(
         new Vec2(0, 0),
         new Vec2(this.configSpaceSize().x, logicalHeight / this.LOGICAL_VIEW_SPACE_FRAME_HEIGHT)
@@ -294,8 +295,8 @@ export class FlamechartPanZoomView extends ReloadableComponent<FlamechartPanZoom
     } else {
       // Resize the viewport rectangle to match the window size aspect
       // ratio.
-      this.setConfigSpaceViewportRect(this.configSpaceViewportRect.withSize(
-        this.configSpaceViewportRect.size.timesPointwise(new Vec2(
+      this.setConfigSpaceViewportRect(this.props.configSpaceViewportRect.withSize(
+        this.props.configSpaceViewportRect.size.timesPointwise(new Vec2(
           width / oldWidth,
           height / oldHeight
         ))
@@ -314,6 +315,7 @@ export class FlamechartPanZoomView extends ReloadableComponent<FlamechartPanZoom
   private renderRects() {
     if (!this.renderer || !this.canvas) return
     this.resizeCanvasIfNeeded()
+    if (this.props.configSpaceViewportRect.isEmpty()) return
 
     const configSpaceToNDC = this.physicalViewSpaceToNDC().times(this.configSpaceToPhysicalViewSpace())
 
@@ -368,7 +370,7 @@ export class FlamechartPanZoomView extends ReloadableComponent<FlamechartPanZoom
   private minConfigSpaceViewportRectWidth() { return 3 * this.props.flamechart.getMinFrameWidth(); }
 
   private transformViewport(transform: AffineTransform) {
-    const viewportRect = transform.transformRect(this.configSpaceViewportRect)
+    const viewportRect = transform.transformRect(this.props.configSpaceViewportRect)
 
     const configSpaceOriginBounds = new Rect(
       new Vec2(0, 0),
@@ -405,7 +407,7 @@ export class FlamechartPanZoomView extends ReloadableComponent<FlamechartPanZoom
     const configSpaceCenter = this.configSpaceToPhysicalViewSpace().inverseTransformPosition(physicalCenter)
     if (!configSpaceCenter) return
 
-    if (multiplier < 1 && this.configSpaceViewportRect.width() <= this.minConfigSpaceViewportRectWidth()) {
+    if (multiplier < 1 && this.props.configSpaceViewportRect.width() <= this.minConfigSpaceViewportRectWidth()) {
       return
     }
 
@@ -590,11 +592,10 @@ export class FlamechartView extends ReloadableComponent<FlamechartViewProps, Fla
 
     return (
       <div className={css(style.hoverTip)} style={positionStyle}>
-        <div className={css(style.hoverTipRow)}>{hoveredNode.frame.name}</div>
-        <div className={css(style.hoverTipRow)}>Total Time: {this.formatTime(hoveredNode.getTotalTime())}</div>
-        <div className={css(style.hoverTipRow)}>Self Time: {this.formatTime(hoveredNode.getSelfTime())}</div>
-        <div className={css(style.hoverTipRow)}>Cum. Total Time: {this.formatTime(hoveredNode.frame.getTotalTime())}</div>
-        <div className={css(style.hoverTipRow)}>Cum. Self Time: {this.formatTime(hoveredNode.frame.getSelfTime())}</div>
+        <div className={css(style.hoverTipRow)}>
+          <span className={css(style.hoverCount)}>{this.formatTime(hoveredNode.getTotalTime())}</span>{' '}
+          {hoveredNode.frame.name}
+        </div>
       </div>
     )
   }
@@ -625,6 +626,7 @@ export class FlamechartView extends ReloadableComponent<FlamechartViewProps, Fla
           ref={this.panZoomRef}
           flamechart={this.props.flamechart}
           setNodeHover={this.onNodeHover}
+          configSpaceViewportRect={this.state.configSpaceViewportRect}
           setConfigSpaceViewportRect={this.setConfigSpaceViewportRect}
         />
         {this.renderTooltip()}
diff --git a/index.html b/index.html
index f8fbb57..c905d0d 100644
--- a/index.html
+++ b/index.html
@@ -4,7 +4,7 @@
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <meta http-equiv="X-UA-Compatible" content="ie=edge">
-  <title>SpeedScope</title>
+  <title>speedscope</title>
 	<link rel="stylesheet" href="reset.css">
   </style>
 </head>
diff --git a/style.ts b/style.ts
new file mode 100644
index 0000000..40c575f
--- /dev/null
+++ b/style.ts
@@ -0,0 +1,13 @@
+export enum FontFamily {
+  MONOSPACE = "Courier, monospace"
+}
+
+export enum FontSize {
+  LABEL = 10,
+  TITLE = 12
+}
+
+export enum Colors {
+  MEDIUM_GRAY = "#BDBDBD",
+  LIGHT_GRAY = "#C4C4C4"
+}