diff --git a/b2g/chrome/content/netError.css b/b2g/chrome/content/netError.css
new file mode 100644
index 00000000000..f83ded7d4f3
--- /dev/null
+++ b/b2g/chrome/content/netError.css
@@ -0,0 +1,131 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ *  This defines the look-and-feel styling of the error pages.
+ *  (see: netError.xhtml)
+ *
+ *  Original styling by William Price <bugzilla@mob.rice.edu>
+ *  Updated for mobile by: Wes Johnston <wjohnston@mozilla.com>
+ */
+
+body {
+  margin: 0;
+  padding: 0 8px 8px;
+  font-family: "Nokia Sans", Tahoma, sans-serif !important;
+}
+
+h1 {
+  font-size: 22px;
+}
+
+h2 {
+  font-size: 16px;
+}
+
+ul {
+  margin: 0px;
+  padding: 0px 0px 0px 1em;
+}
+
+li {
+  margin: 0px;
+  padding: 8px 0px;
+}
+
+#errorPage {
+  background-color: #CEE6F4;
+}
+
+#errorPage.certerror {
+  background-color: #EFD400;
+}
+
+#errorPage.blockedsite {
+  background-color: #BF0000;
+}
+
+#errorTitle {
+  background: url("chrome://browser/content/images/errorpage-warning.png") left center no-repeat;
+  /* Scaled by .666 of their actual size */
+  background-size: 40px 40px;
+  background-origin: content-box;
+  min-height: 60px;
+  margin-left: auto;
+  margin-right: auto;
+  max-width: 500px;
+  margin-left: auto;
+  margin-right: auto;
+}
+
+#errorPage.certerror #errorTitle {
+  background-image: url("chrome://browser/content/images/errorpage-larry-black.png");
+}
+
+#errorPage.blockedsite #errorTitle {
+  background-image: url("chrome://browser/content/images/errorpage-larry-white.png");
+  color: white;
+}
+
+.errorTitleText {
+  padding: 0px 0px 0px 50px;
+  display: inline-block;
+  vertical-align: middle
+}
+
+#errorPageContainer {
+  background-color: white;
+  border: 1px solid #999999;
+  border-radius: 6px;
+  padding: 6px 20px 20px;
+  font-size: 14px;
+  max-width: 500px;
+  margin-left: auto;
+  margin-right: auto;
+}
+
+#errorShortDesc > p:empty {
+  display: none;
+}
+
+#errorShortDesc > p {
+  overflow: auto;
+  border-bottom: 1px solid #999999;
+  padding-bottom: 1em;
+}
+
+#errorPage.blockedsite #errorShortDesc > p {
+  font-weight: bold;
+  border-bottom: none;
+  padding-bottom: 0px;
+}
+
+#securityOverrideDiv {
+  padding-top: 10px;
+}
+
+div[collapsed] {
+  padding-left: 15px;
+  background-image: url("chrome://browser/skin/images/arrowright-16.png");
+  background-size: 11px 11px;
+  background-repeat: no-repeat;
+  background-position: left 0.3em;
+}
+
+div[collapsed="true"] {
+  background-image: url("chrome://browser/skin/images/arrowright-16.png");
+}
+
+div[collapsed="false"] {
+  background-image: url("chrome://browser/skin/images/arrowdown-16.png");
+}
+
+div[collapsed="true"] > p,
+div[collapsed="true"] > div {
+  display: none;
+}
+
+button {
+  padding: 0.3em !important;
+}
diff --git a/b2g/chrome/jar.mn b/b2g/chrome/jar.mn
index c8c344be72d..632668d3f08 100644
--- a/b2g/chrome/jar.mn
+++ b/b2g/chrome/jar.mn
@@ -25,9 +25,11 @@ chrome.jar:
 
 % override chrome://global/skin/media/videocontrols.css chrome://browser/content/touchcontrols.css
 % override chrome://global/content/aboutCertError.xhtml chrome://browser/content/aboutCertError.xhtml
+% override chrome://global/skin/netError.css chrome://browser/content/netError.css
 
   content/ErrorPage.js                  (content/ErrorPage.js)
   content/aboutCertError.xhtml          (content/aboutCertError.xhtml)
+  content/netError.css                  (content/netError.css)
   content/images/errorpage-larry-black.png (content/images/errorpage-larry-black.png)
   content/images/errorpage-larry-white.png (content/images/errorpage-larry-white.png)
   content/images/errorpage-warning.png (content/images/errorpage-warning.png)