chrome://inspect sticky nav bar & padding under anchor

chrome/browser/resources/inspect/inspect.css

 /* Copyright (c) 2012 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file. */
 
+* {
+  box-sizing: border-box;
+}
+
 body {
   color: rgb(48, 57, 66);
   font-size: 13px;
   margin: 0;
   min-width: 47em;
-  padding: 20px 20px 65px 0;
 }
 
 .hidden {
     display: none !important;
 }
 
 img {
   flex-shrink: 0;
   height: 16px;
   padding-left: 2px;
   padding-right: 5px;
   vertical-align: top;
-  width: 16px;
+  width: 23px;
 }
 
 #container {
   -webkit-flex-direction: row;
   display: -webkit-flex;
 }
 
 #navigation {
+  max-height: 100vh;
+  overflow: auto;
+  padding-top: 20px;
   width: 150px;
 }
 
 #content {
   -webkit-flex: 1;
+  max-height: 100vh;
+  overflow: auto;
 }
 
 #caption {
   color: rgb(92, 97, 102);
   font-size: 150%;
   padding-bottom: 10px;
   padding-left: 20px;
 }
 
 #serviceworker-internals {
@@ skipping 16 matching lines @@
   font: inherit;
   line-height: 17px;
   margin: 6px 0;
   padding: 0 2px;
 }
 
 .tab-header:not(.selected) > button {
   color: #999;
 }
 
+#content > div {
+  padding: 54px 20px 65px 0;
+}
 #content > div:not(.selected) {
   display: none;
 }
 
 .content-header {
+  background: linear-gradient(white, white 40%, rgba(255, 255, 255, 0.92));
   border-bottom: 1px solid #eee;
   font-size: 150%;
-  padding-bottom: 10px;
+  left: 150px;
+  padding: 20px 0 10px 0;
+  position: fixed;
+  right: 20px;
+  top: 0;
+  z-index: 1;
 }
 
 #devices-help {
   margin-top: 10px;
 }
 
 .device-header {
   -webkit-box-align: baseline;
   -webkit-box-orient: horizontal;
   display: -webkit-box;
@@ skipping 42 matching lines @@
 
 .port-number {
   height: 16px;
   margin-right: 5px;
 }
 
 .browser-header {
   align-items: center;
   display: flex;
   flex-flow: row wrap;
-  min-height: 23px;
+  min-height: 33px;
   padding-top: 10px;
 }
 
 .browser-header > .browser-name {
   font-size: 110%;
   font-weight: bold;
 }
 
 .browser-header > .browser-user {
   color: #999;
@@ skipping 248 matching lines @@
 }
 
 #port-forwarding-config-buttons {
   align-items: center;
   display: flex;
 }
 
 #port-forwarding-config-buttons > label {
   flex-grow: 1
 }