diff --git a/client/src/components/layouts/learn.css b/client/src/components/layouts/learn.css
index 964a1f6ca2a..d0609b334d2 100644
--- a/client/src/components/layouts/learn.css
+++ b/client/src/components/layouts/learn.css
@@ -14,6 +14,22 @@
   flex-direction: column;
 }
 
+#learn-app-wrapper .editor-pane {
+  display: flex;
+  flex-direction: column;
+  min-height: 0;
+  width: 100%;
+}
+
+#learn-app-wrapper .editor-pane-code {
+  flex: 1 1 auto;
+  min-height: 0;
+}
+#learn-app-wrapper .editor-pane > .independent-lower-jaw {
+  flex: 0 0 auto;
+  margin-top: auto;
+}
+
 #learn-app-wrapper .reflex-container.vertical {
   min-height: 0;
   flex-grow: 1;
diff --git a/client/src/templates/Challenges/classic/desktop-layout.tsx b/client/src/templates/Challenges/classic/desktop-layout.tsx
index b1d42a7dea5..a8fc6784f76 100644
--- a/client/src/templates/Challenges/classic/desktop-layout.tsx
+++ b/client/src/templates/Challenges/classic/desktop-layout.tsx
@@ -314,9 +314,14 @@ const DesktopLayout = (props: DesktopLayoutProps): JSX.Element => {
           name='editorPane'
           {...resizeProps}
           data-playwright-test-label='editor-pane'
+          className='editor-pane'
         >
           {!isEmpty(challengeFiles) && (
-            <ReflexContainer key='codePane' orientation='horizontal'>
+            <ReflexContainer
+              key='codePane'
+              orientation='horizontal'
+              className='editor-pane-code'
+            >
               <ReflexElement
                 name='codePane'
                 {...(displayEditorConsole && { flex: codePane.flex })}
diff --git a/client/src/templates/Challenges/classic/show.tsx b/client/src/templates/Challenges/classic/show.tsx
index 72376d43749..1818477182e 100644
--- a/client/src/templates/Challenges/classic/show.tsx
+++ b/client/src/templates/Challenges/classic/show.tsx
@@ -314,13 +314,9 @@ function ShowClassic({
 
   // AB testing Pre-fetch in the Spanish locale
   const isPreFetchEnabled = useFeature('prefetch_ab_test').on;
-  const isIndependentLowerJawEnabled = useFeature('independent-lower-jaw').on;
 
-  // Independent lower jaw is only enabled for the urriculum outline workshop
-  const showIndependentLowerJaw =
-    block === 'workshop-curriculum-outline' &&
-    isIndependentLowerJawEnabled &&
-    !isMobile;
+  // Independent lower jaw is only enabled for desktop workshops.
+  const showIndependentLowerJaw = hasEditableBoundaries && !isMobile;
 
   useEffect(() => {
     if (isPreFetchEnabled && envData.clientLocale === 'espanol') {
diff --git a/client/src/templates/Challenges/components/independent-lower-jaw.css b/client/src/templates/Challenges/components/independent-lower-jaw.css
index 75be49fe949..712f89c1e15 100644
--- a/client/src/templates/Challenges/components/independent-lower-jaw.css
+++ b/client/src/templates/Challenges/components/independent-lower-jaw.css
@@ -1,10 +1,8 @@
 .independent-lower-jaw {
-  position: absolute;
-  left: 0;
-  right: 0;
-  bottom: 0;
   width: 100%;
-  z-index: 10;
+  flex: 0 0 auto;
+  position: relative;
+  z-index: 101;
 }
 
 .independent-lower-jaw .hint-container {
@@ -13,7 +11,24 @@
   flex-direction: row;
   justify-content: space-between;
   padding: 12px;
-  margin: 12px;
+  position: absolute;
+  bottom: 100%;
+  width: 95%;
+  left: 50%;
+  transform: translateX(-50%);
+  margin-bottom: 12px;
+  border: 1px solid var(--background-secondary);
+  opacity: 0;
+  animation: jaw-hint-fade-in 0.3s ease forwards;
+}
+
+@keyframes jaw-hint-fade-in {
+  from {
+    opacity: 0;
+  }
+  to {
+    opacity: 1;
+  }
 }
 
 .independent-lower-jaw .btn-cta {
diff --git a/client/src/templates/Challenges/components/independent-lower-jaw.tsx b/client/src/templates/Challenges/components/independent-lower-jaw.tsx
index e1b94a2d00e..7c5f87f3205 100644
--- a/client/src/templates/Challenges/components/independent-lower-jaw.tsx
+++ b/client/src/templates/Challenges/components/independent-lower-jaw.tsx
@@ -51,6 +51,10 @@ export function IndependentLowerJaw({
   const hint = firstFailedTest?.message;
   const [showHint, setShowHint] = React.useState(false);
   const [showSubmissionHint, setShowSubmissionHint] = React.useState(true);
+  const signInLinkRef = React.useRef<HTMLAnchorElement>(null);
+  const submitButtonRef = React.useRef<HTMLButtonElement>(null);
+  const [wasCheckButtonClicked, setWasCheckButtonClicked] =
+    React.useState(false);
 
   const isChallengeComplete = tests.every(test => test.pass);
 
@@ -58,27 +62,60 @@ export function IndependentLowerJaw({
     setShowHint(!!hint);
   }, [hint]);
 
+  React.useEffect(() => {
+    if (!isChallengeComplete || !wasCheckButtonClicked) return;
+
+    const focusTarget = isSignedIn
+      ? submitButtonRef.current
+      : signInLinkRef.current;
+    focusTarget?.focus();
+    setWasCheckButtonClicked(false);
+  }, [isChallengeComplete, isSignedIn, wasCheckButtonClicked]);
+
+  const handleCheckButtonClick = () => {
+    setWasCheckButtonClicked(true);
+    executeChallenge();
+  };
+
   const isMacOS = navigator.userAgent.includes('Mac OS');
-  const checkButtonText = isMacOS ? t('command-enter') : t('ctrl-enter');
+  const checkButtonText = isMacOS
+    ? t('buttons.command-enter')
+    : t('buttons.ctrl-enter');
 
   return (
-    <div className='independent-lower-jaw' tabIndex={-1}>
+    <div
+      className='independent-lower-jaw'
+      data-playwright-test-label='independentLowerJaw-container'
+      tabIndex={-1}
+    >
       {showHint && hint && (
-        <div className='hint-container'>
+        <div
+          className='hint-container'
+          data-playwright-test-label='independentLowerJaw-failing-hint'
+        >
           <div dangerouslySetInnerHTML={{ __html: hint }} />
-          <button className={'tooltip'} onClick={() => setShowHint(false)}>
+          <button
+            className={'tooltip'}
+            data-playwright-test-label='independentLowerJaw-hint-close-button'
+            onClick={() => setShowHint(false)}
+          >
             ×<span className='tooltiptext'> {t('buttons.close')}</span>
           </button>
         </div>
       )}
       {isChallengeComplete && showSubmissionHint && (
-        <div className='hint-container'>
+        <div
+          className='hint-container'
+          data-playwright-test-label='independentLowerJaw-submission-hint'
+        >
           <div>
             <p>{t('learn.congratulations-code-passes')}</p>
             {!isSignedIn && (
               <a
                 href={`${apiLocation}/signin`}
                 className='btn-cta btn btn-block'
+                data-playwright-test-label='independentLowerJaw-signin-link'
+                ref={signInLinkRef}
                 onClick={() => {
                   callGA({
                     event: 'sign_in'
@@ -91,6 +128,7 @@ export function IndependentLowerJaw({
           </div>
           <button
             className={'tooltip'}
+            data-playwright-test-label='independentLowerJaw-submission-hint-close-button'
             onClick={() => setShowSubmissionHint(false)}
           >
             ×<span className='tooltiptext'> {t('buttons.close')}</span>
@@ -104,7 +142,10 @@ export function IndependentLowerJaw({
             <Button
               block
               className={`${isSignedIn && 'btn-cta'} tooltip`}
+              id='independent-lower-jaw-submit-button'
+              data-playwright-test-label='independentLowerJaw-submit-button'
               onClick={() => submitChallenge()}
+              ref={submitButtonRef}
             >
               {t('buttons.submit-continue')}
               <span className='tooltiptext left-tooltip '>
@@ -115,7 +156,8 @@ export function IndependentLowerJaw({
             <button
               type='button'
               className='btn-cta tooltip'
-              onClick={() => executeChallenge()}
+              data-playwright-test-label='independentLowerJaw-check-button'
+              onClick={handleCheckButtonClick}
             >
               {t('buttons.check-code')}
               <span className='tooltiptext left-tooltip '>
@@ -128,6 +170,7 @@ export function IndependentLowerJaw({
           <button
             type='button'
             className='icon-botton tooltip'
+            data-playwright-test-label='independentLowerJaw-reset-button'
             onClick={openResetModal}
           >
             <Reset />
@@ -136,6 +179,7 @@ export function IndependentLowerJaw({
           <button
             type='button'
             className='icon-botton tooltip'
+            data-playwright-test-label='independentLowerJaw-help-button'
             onClick={openHelpModal}
           >
             <Help />
diff --git a/e2e/challenge-reset-modal.spec.ts b/e2e/challenge-reset-modal.spec.ts
index 5de4c2412b7..281ec8e5992 100644
--- a/e2e/challenge-reset-modal.spec.ts
+++ b/e2e/challenge-reset-modal.spec.ts
@@ -47,7 +47,7 @@ test('should render the modal content correctly', async ({ page }) => {
     '/learn/responsive-web-design-v9/workshop-cat-photo-app/step-3'
   );
 
-  await page.getByRole('button', { name: translations.buttons.reset }).click();
+  await page.getByTestId('independentLowerJaw-reset-button').click();
 
   await expectToRenderResetModal(page);
 
@@ -99,12 +99,8 @@ test('User can reset challenge', async ({ page, isMobile, browserName }) => {
     })
     .click();
 
-  await expect(
-    page.getByText(translations.learn['sorry-keep-trying'])
-  ).toBeVisible();
-
   // Reset the challenge
-  await page.getByTestId('lowerJaw-reset-button').click();
+  await page.getByTestId('independentLowerJaw-reset-button').click();
   await page
     .getByRole('button', { name: translations.buttons['reset-lesson'] })
     .click();
@@ -210,7 +206,7 @@ test('should close when the user clicks the close button', async ({ page }) => {
     '/learn/responsive-web-design-v9/workshop-cat-photo-app/step-3'
   );
 
-  await page.getByRole('button', { name: translations.buttons.reset }).click();
+  await page.getByTestId('independentLowerJaw-reset-button').click();
 
   await expect(
     page.getByRole('dialog', { name: translations.learn.reset })
diff --git a/e2e/challenge.spec.ts b/e2e/challenge.spec.ts
index a23b3d0cc5b..c5c5ee266f3 100644
--- a/e2e/challenge.spec.ts
+++ b/e2e/challenge.spec.ts
@@ -41,7 +41,7 @@ test.describe('when reloading the page', () => {
     await page.keyboard.press('Enter');
 
     await expect(
-      page.getByText(translations.learn.congratulations)
+      page.getByText(translations.learn['congratulations-code-passes'])
     ).toBeVisible();
   });
 });
diff --git a/e2e/help-button.spec.ts b/e2e/help-button.spec.ts
index 2aa4e8451e2..784fbbc3b7d 100644
--- a/e2e/help-button.spec.ts
+++ b/e2e/help-button.spec.ts
@@ -41,7 +41,12 @@ test.describe('help-button tests for a page with two links when video is not ava
   });
 });
 
-test.describe('help-button tests for a page with a reset and help button', () => {
+test.describe('Mobile help-button tests for a page with a reset and help button', () => {
+  // Test the lower jaw on mobile viewport only
+  test.use({
+    viewport: { width: 393, height: 851 },
+    isMobile: true
+  });
   test('should not be present before the user checks their code three times', async ({
     page
   }) => {
@@ -69,3 +74,17 @@ test.describe('help-button tests for a page with a reset and help button', () =>
     await expect(helpIconGroup).toBeHidden();
   });
 });
+
+test.describe('Desktop help-button tests for a page with a reset and help button', () => {
+  test('should always be shown', async ({ page }) => {
+    await page.goto(
+      'learn/2022/responsive-web-design/learn-html-by-building-a-cat-photo-app/step-3'
+    );
+    await expect(
+      page.getByTestId('independentLowerJaw-reset-button')
+    ).toBeVisible();
+    await expect(
+      page.getByTestId('independentLowerJaw-help-button')
+    ).toBeVisible();
+  });
+});
diff --git a/e2e/independent-lower-jaw.spec.ts b/e2e/independent-lower-jaw.spec.ts
new file mode 100644
index 00000000000..99c07e4f342
--- /dev/null
+++ b/e2e/independent-lower-jaw.spec.ts
@@ -0,0 +1,151 @@
+import { test, expect } from '@playwright/test';
+import { clearEditor, focusEditor, getEditors } from './utils/editor';
+
+const workshopChallengeUrl =
+  '/learn/responsive-web-design-v9/workshop-cafe-menu/step-2';
+const penguinChallengeUrl =
+  '/learn/2022/responsive-web-design/learn-css-transforms-by-building-a-penguin/step-4';
+
+const workshopPassingSolution = `<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <title>Cafe Menu</title>
+  </head>
+  <body>
+    <main>
+      <h1>CAMPER CAFE</h1>
+    </main>
+  </body>
+</html>`;
+
+test.use({
+  viewport: { width: 1080, height: 720 }
+});
+
+test('Clicking "Check Your Code" reveals failing feedback', async ({
+  page
+}) => {
+  await page.goto(workshopChallengeUrl);
+
+  await page.getByTestId('independentLowerJaw-check-button').click();
+
+  await expect(
+    page.getByTestId('independentLowerJaw-failing-hint')
+  ).toBeVisible();
+});
+
+test('Reset button opens and closes the reset modal', async ({ page }) => {
+  await page.goto(workshopChallengeUrl);
+
+  await page.getByTestId('independentLowerJaw-reset-button').click();
+
+  const resetModal = page.getByRole('dialog', { name: 'Reset this lesson?' });
+  await expect(resetModal).toBeVisible();
+
+  await page.getByRole('button', { name: /close/i }).click();
+  await expect(resetModal).not.toBeVisible();
+});
+
+test('Checks hotkeys when instruction is focused', async ({
+  page,
+  browserName
+}) => {
+  await page.goto(workshopChallengeUrl);
+
+  const editor = getEditors(page);
+  const description = page.locator('#description');
+  await focusEditor({ page, isMobile: false });
+  await clearEditor({ page, browserName, isMobile: false });
+  await editor.fill(workshopPassingSolution);
+  await description.click();
+
+  if (browserName === 'webkit') {
+    await page.keyboard.press('Meta+Enter');
+  } else {
+    await page.keyboard.press('Control+Enter');
+  }
+
+  await expect(
+    page.getByTestId('independentLowerJaw-check-button')
+  ).not.toBeFocused();
+});
+
+test('Hint text should not contain placeholders `fcc-expected`', async ({
+  page,
+  browserName,
+  isMobile
+}) => {
+  await page.goto(penguinChallengeUrl);
+
+  const editor = getEditors(page);
+  await focusEditor({ page, isMobile });
+  await clearEditor({ page, browserName, isMobile });
+  await editor.fill(
+    'body{background:linear-gradient(45deg, rgb(118, 201, 255), rgb(247, 255, 222));margin:0;padding:0;width:5%;height:100vh}'
+  );
+
+  await page.getByTestId('independentLowerJaw-check-button').click();
+
+  const hintDescription = page.getByTestId('independentLowerJaw-failing-hint');
+  await expect(hintDescription).toContainText(
+    'You should give body a width of 100%, but found 5%',
+    { useInnerText: true }
+  );
+});
+
+test.describe('Unauthenticated user', () => {
+  test.use({ storageState: { cookies: [], origins: [] } });
+
+  test('Focuses on the sign in button when unauthenticated user completes a step', async ({
+    page,
+    browserName,
+    isMobile
+  }) => {
+    await page.goto(workshopChallengeUrl);
+
+    const editor = getEditors(page);
+    await focusEditor({ page, isMobile });
+    await clearEditor({ page, browserName, isMobile });
+    await editor.fill(workshopPassingSolution);
+
+    await page.getByTestId('independentLowerJaw-check-button').click();
+
+    const signInLink = page.getByTestId('independentLowerJaw-signin-link');
+    await expect(
+      page.getByTestId('independentLowerJaw-submit-button')
+    ).toBeVisible();
+    await expect(signInLink).toBeVisible();
+    await expect(
+      page.getByTestId('independentLowerJaw-check-button')
+    ).toHaveCount(0);
+    await expect(signInLink).toBeFocused();
+  });
+});
+
+test.describe('Authenticated user', () => {
+  test.use({ storageState: 'playwright/.auth/certified-user.json' });
+
+  test('Focuses on the submit button when authenticated user completes a step', async ({
+    page,
+    browserName,
+    isMobile
+  }) => {
+    await page.goto(workshopChallengeUrl);
+
+    const editor = getEditors(page);
+    await focusEditor({ page, isMobile });
+    await clearEditor({ page, browserName, isMobile });
+    await editor.fill(workshopPassingSolution);
+
+    await page.getByTestId('independentLowerJaw-check-button').click();
+
+    const submitButton = page.getByTestId('independentLowerJaw-submit-button');
+    await expect(submitButton).toBeVisible();
+    await expect(submitButton).toContainText('Submit and continue');
+    await expect(submitButton).toBeFocused();
+    await expect(
+      page.getByTestId('independentLowerJaw-signin-link')
+    ).toHaveCount(0);
+  });
+});
diff --git a/e2e/lower-jaw.spec.ts b/e2e/lower-jaw.spec.ts
index 3b013efa221..9f16edcbdd0 100644
--- a/e2e/lower-jaw.spec.ts
+++ b/e2e/lower-jaw.spec.ts
@@ -2,6 +2,12 @@ import { test, expect } from '@playwright/test';
 import { clearEditor, focusEditor, getEditors } from './utils/editor';
 import { signout } from './utils/logout';
 
+// Test the lower jaw on mobile viewport only
+test.use({
+  viewport: { width: 393, height: 851 },
+  isMobile: true
+});
+
 test('Check the initial states of submit button and "check your code" button', async ({
   page
 }) => {
@@ -97,7 +103,7 @@ test('Focuses on the submit button after tests passed', async ({
     name: 'Submit and go to next challenge'
   });
   await focusEditor({ page, isMobile });
-  await clearEditor({ page, browserName });
+  await clearEditor({ page, browserName, isMobile });
 
   await editor.fill(
     '<h2>Cat Photos</h2>\n<p>Everyone loves cute cats online!</p>'
@@ -123,7 +129,7 @@ test('Prompts unauthenticated user to sign in to save progress', async ({
     name: 'Sign in to save your progress'
   });
   await focusEditor({ page, isMobile });
-  await clearEditor({ page, browserName });
+  await clearEditor({ page, browserName, isMobile });
 
   await editor.fill(
     '<h2>Cat Photos</h2>\n<p>Everyone loves cute cats online!</p>'
@@ -185,9 +191,8 @@ test('should display the text of submit and go to next challenge button accordin
   );
   const editor = getEditors(page);
   const checkButton = page.getByRole('button', { name: 'Check Your Code' });
-
   await focusEditor({ page, isMobile });
-  await clearEditor({ page, browserName });
+  await clearEditor({ page, browserName, isMobile });
 
   await editor.fill(
     '<h2>Cat Photos</h2>\n<p>Everyone loves cute cats online!</p>'
@@ -228,7 +233,7 @@ test('Hint text should not contain placeholders `fcc-expected`', async ({
   const editor = getEditors(page);
   const checkButton = page.getByRole('button', { name: 'Check Your Code' });
   await focusEditor({ page, isMobile });
-  await clearEditor({ page, browserName });
+  await clearEditor({ page, browserName, isMobile });
 
   await editor.fill(
     'body{background:linear-gradient(45deg, rgb(118, 201, 255), rgb(247, 255, 222));margin:0;padding:0;width:5%;height:100vh}'
diff --git a/e2e/multifile-editor.spec.ts b/e2e/multifile-editor.spec.ts
index 5eef51ebc75..48a026fdfd6 100644
--- a/e2e/multifile-editor.spec.ts
+++ b/e2e/multifile-editor.spec.ts
@@ -104,7 +104,7 @@ test.describe('MultifileEditor Component', () => {
     await page.keyboard.press('Control+Enter');
 
     const submitButton = page.getByRole('button', {
-      name: 'Submit and go to next challenge'
+      name: 'Submit and Continue'
     });
 
     // Mobile screen shifts submit button out of view and Playwright fails at scrolling with multiple editors open
diff --git a/e2e/progress-bar.spec.ts b/e2e/progress-bar.spec.ts
index 8d2e4615a12..57966ad8ee0 100644
--- a/e2e/progress-bar.spec.ts
+++ b/e2e/progress-bar.spec.ts
@@ -1,7 +1,11 @@
 import { expect, test } from '@playwright/test';
 import { clearEditor, focusEditor } from './utils/editor';
 
-test.describe('Progress bar component', () => {
+test.describe('Progress bar component in editor', () => {
+  // progress bar shows up for the defeult lower jaw that is only displayed on mobile.
+  test.use({
+    viewport: { width: 390, height: 844 }
+  });
   test('Should appear with the correct content after the user has submitted their code', async ({
     page,
     isMobile,
@@ -31,7 +35,9 @@ test.describe('Progress bar component', () => {
       .getByRole('button', { name: 'Submit and go to next challenge' })
       .click();
   });
+});
 
+test.describe('Progress bar component in modal', () => {
   test('should appear in the completion modal after user has submitted their code', async ({
     page,
     isMobile,
diff --git a/e2e/scrollbar-width.spec.ts b/e2e/scrollbar-width.spec.ts
index a28f72a757e..b01a6763569 100644
--- a/e2e/scrollbar-width.spec.ts
+++ b/e2e/scrollbar-width.spec.ts
@@ -1,6 +1,9 @@
 import { test, expect } from '@playwright/test';
 
-test.describe('Editor scrollbar width', () => {
+test.describe('Editor scrollbar width on mobile', () => {
+  test.use({
+    viewport: { width: 393, height: 851 }
+  });
   test.beforeEach(async ({ page }) => {
     await page.goto('/settings');
   });