diff --git a/app/src/main/assets/high_risk_error_pages.html b/app/src/main/assets/high_risk_error_pages.html
index c1eb16e2d..aec567697 100644
--- a/app/src/main/assets/high_risk_error_pages.html
+++ b/app/src/main/assets/high_risk_error_pages.html
@@ -30,21 +30,6 @@
 
     <!-- Back Button -->
     <button id="backButton" onclick="window.history.back()">Go back</button>
-
-    <!-- Advanced Button -->
-    <button id="advancedButton" class="buttonSecondary" onclick="toggleAdvanced()" style="display: none;"></button>
-
-    <div id="advancedPanelContainer">
-        <div id="badCertAdvancedPanel" class="advanced-panel" style="display: none;">
-            <p id="badCertTechnicalInfo"></p>
-            <div id="advancedPanelBackButtonContainer" class="advancedPanelButtonContainer">
-                <button id="advancedPanelBackButton" onClick="window.history.back()"></button>
-            </div>
-            <div id="advancedPanelAcceptButtonContainer" class="advancedPanelButtonContainer">
-                <button id="advancedPanelAcceptButton" class="buttonSecondary" onClick="acceptAndContinue(true)"></button>
-            </div>
-        </div>
-    </div>
 </div>
 
 </body>
diff --git a/app/src/main/assets/high_risk_error_style.css b/app/src/main/assets/high_risk_error_style.css
index 1a8563114..41d1bf4a9 100644
--- a/app/src/main/assets/high_risk_error_style.css
+++ b/app/src/main/assets/high_risk_error_style.css
@@ -70,31 +70,9 @@ button {
   background-image: none;
 }
 
-button.inProgress {
-  background-image: linear-gradient(-45deg, #dfe8ee,     #dfe8ee 33%,
-                                            #ecf0f3 33%, #ecf0f3 66%,
-                                            #dfe8ee 66%, #dfe8ee);
-  background-size: 37px 5px;
-  background-repeat: repeat-x;
-  animation: progress 6s linear infinite;
-}
 
-@keyframes progress {
-  from { background-position: 0 100%; }
-  to { background-position: 100% 100%; }
-}
-
-#errorPageContainer {
-  /* If the page is greater than 550px center the content.
-   * This number should be kept in sync with the media query for tablets below */
-  max-width: 550px;
-  margin: 0 auto;
-  transform: translateY(var(--moz-background-height));
-  padding-bottom: var(--moz-vertical-spacing);
-
-  min-height: calc(100% - var(--moz-background-height) - var(--moz-vertical-spacing));
-  display: flex;
-  flex-direction: column;
+.hidden {
+  display: none;
 }
 
 /* On large width devices, apply specific styles here. Often triggered by landscape mode or tablets */
diff --git a/app/src/main/assets/low_and_medium_risk_error_pages.html b/app/src/main/assets/low_and_medium_risk_error_pages.html
index 67ab3a284..5262f925a 100644
--- a/app/src/main/assets/low_and_medium_risk_error_pages.html
+++ b/app/src/main/assets/low_and_medium_risk_error_pages.html
@@ -32,11 +32,11 @@
     <button id="errorTryAgain" onclick="window.location.reload()"></button>
 
     <!-- Advanced Button -->
-    <button id="advancedButton" class="buttonSecondary" onclick="toggleAdvancedAndScroll()" style="display: none;"></button>
+    <button id="advancedButton" class="buttonSecondary hidden" onclick="toggleAdvancedAndScroll()"></button>
 
-    <hr id="horizontalLine" style="display: none;">
+    <hr id="horizontalLine" class="hidden">
     <div id="advancedPanelContainer">
-        <div id="badCertAdvancedPanel" class="advanced-panel" style="display: none;">
+        <div id="badCertAdvancedPanel" class="advanced-panel hidden">
             <p id="badCertTechnicalInfo"></p>
             <div id="advancedPanelBackButtonContainer" class="advancedPanelButtonContainer">
                 <button id="advancedPanelBackButton" onClick="window.history.back()"></button>
@@ -57,26 +57,15 @@ function toggleAdvancedAndScroll() {
     const horizontalLine = document.getElementById("horizontalLine");
     const advancedPanelAcceptButton = document.getElementById("advancedPanelAcceptButton");
     const badCertAdvancedPanel = document.getElementById("badCertAdvancedPanel");
-/*
-    horizontalLine.style.display = "block";
-    advancedPanelAcceptButton.scrollIntoView({behavior: "smooth", block: "center", inline: "nearest"});
-
-*/
 
     // We know that the button is being displayed
-
-    if (badCertAdvancedPanel.style.display === "block") {
-        horizontalLine.style.display = "block";
+    if (badCertAdvancedPanel.classList.has("hidden")) {
+        horizontalLine.classList.remove("hidden");
         advancedPanelAcceptButton.scrollIntoView({behavior: "smooth", block: "center", inline: "nearest"});
-    } else if (badCertAdvancedPanel.style.display === "none") {
-        horizontalLine.style.display = "none";
+    } else if (badCertAdvancedPanel.classList.has("hidden")) {
+        horizontalLine.classList.add("hidden");
     }
 }
-
-function overrideAdvancedButtonStyling() {
-    const advancedButton = document.getElementById("advancedButton");
-    advancedButton.style.display = "inline-flex";
-}
 </script>
 
 <script src="./errorPageScripts.js"></script>
diff --git a/app/src/main/assets/low_and_medium_risk_error_style.css b/app/src/main/assets/low_and_medium_risk_error_style.css
index f4d0de178..ea6e1f4e2 100644
--- a/app/src/main/assets/low_and_medium_risk_error_style.css
+++ b/app/src/main/assets/low_and_medium_risk_error_style.css
@@ -98,6 +98,10 @@ hr {
   min-height: 100%;
 }
 
+.hidden {
+  display: none;
+}
+
 /* On large width devices, apply specific styles here. Often triggered by landscape mode or tablets */
 @media (min-width: 550px) {
   button {
diff --git a/app/src/main/java/org/mozilla/fenix/AppRequestInterceptor.kt b/app/src/main/java/org/mozilla/fenix/AppRequestInterceptor.kt
index 260525fbb..74de1f35a 100644
--- a/app/src/main/java/org/mozilla/fenix/AppRequestInterceptor.kt
+++ b/app/src/main/java/org/mozilla/fenix/AppRequestInterceptor.kt
@@ -6,7 +6,6 @@ package org.mozilla.fenix
 
 import android.content.Context
 import android.net.ConnectivityManager
-import androidx.annotation.StringRes
 import androidx.core.content.getSystemService
 import mozilla.components.browser.errorpages.ErrorPages
 import mozilla.components.browser.errorpages.ErrorType
@@ -123,16 +122,13 @@ class AppRequestInterceptor(private val context: Context) : RequestInterceptor {
     }
 
     internal enum class RiskLevel(val htmlRes: String) {
-
         Low(LOW_AND_MEDIUM_RISK_ERROR_PAGES),
         Medium(LOW_AND_MEDIUM_RISK_ERROR_PAGES),
         High(HIGH_RISK_ERROR_PAGES),
     }
 
-
     companion object {
         internal const val LOW_AND_MEDIUM_RISK_ERROR_PAGES = "low_and_medium_risk_error_pages.html"
         internal const val HIGH_RISK_ERROR_PAGES = "high_risk_error_pages.html"
     }
 }
-