diff --git a/aio.html b/aio.html
index 90a997e..4d2d9e4 100644
--- a/aio.html
+++ b/aio.html
@@ -325,7 +325,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Output</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -354,7 +354,7 @@ <h3 class="callout-title">Challenge 2: how do you nest solutions within
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>You can add a line with at least three colons and a
 <code>solution</code> tag.</p>
diff --git a/index.html b/index.html
index 931725e..1817a31 100644
--- a/index.html
+++ b/index.html
@@ -329,7 +329,7 @@ <h3 class="callout-title">Details<a class="anchor" aria-label="anchor" href="#de
   <h3 class="accordion-header" id="headingSpoiler1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="eye"></i></div>Windows</h3>
 </button>
-<div id="collapseSpoiler1" class="accordion-collapse collapse" aria-labelledby="headingSpoiler1" data-bs-parent="#accordionSpoiler1">
+<div id="collapseSpoiler1" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
 <div class="accordion-body">
 <p>Use PuTTY</p>
 </div>
@@ -342,7 +342,7 @@ <h3 class="accordion-header" id="headingSpoiler1">
   <h3 class="accordion-header" id="headingSpoiler2">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="eye"></i></div>MacOS</h3>
 </button>
-<div id="collapseSpoiler2" class="accordion-collapse collapse" aria-labelledby="headingSpoiler2" data-bs-parent="#accordionSpoiler2">
+<div id="collapseSpoiler2" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler2" aria-labelledby="headingSpoiler2">
 <div class="accordion-body">
 <p>Use Terminal.app</p>
 </div>
@@ -355,7 +355,7 @@ <h3 class="accordion-header" id="headingSpoiler2">
   <h3 class="accordion-header" id="headingSpoiler3">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="eye"></i></div>Linux</h3>
 </button>
-<div id="collapseSpoiler3" class="accordion-collapse collapse" aria-labelledby="headingSpoiler3" data-bs-parent="#accordionSpoiler3">
+<div id="collapseSpoiler3" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler3" aria-labelledby="headingSpoiler3">
 <div class="accordion-body">
 <p>Use Terminal</p>
 </div>
diff --git a/instructor/aio.html b/instructor/aio.html
index ff819ad..d45b66e 100644
--- a/instructor/aio.html
+++ b/instructor/aio.html
@@ -311,7 +311,7 @@ <h3 class="card-title">Objectives</h3>
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
 <div class="accordion-body">
 <p>Inline instructor notes can help inform instructors of timing
 challenges associated with the lessons. They appear in the “Instructor
@@ -343,7 +343,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Output</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -372,7 +372,7 @@ <h3 class="callout-title">Challenge 2: how do you nest solutions within
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>You can add a line with at least three colons and a
 <code>solution</code> tag.</p>
diff --git a/instructor/index.html b/instructor/index.html
index 689fb0f..dd53d4b 100644
--- a/instructor/index.html
+++ b/instructor/index.html
@@ -354,7 +354,7 @@ <h3 class="callout-title">Details<a class="anchor" aria-label="anchor" href="#de
   <h3 class="accordion-header" id="headingSpoiler1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="eye"></i></div>Windows</h3>
 </button>
-<div id="collapseSpoiler1" class="accordion-collapse collapse" aria-labelledby="headingSpoiler1" data-bs-parent="#accordionSpoiler1">
+<div id="collapseSpoiler1" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
 <div class="accordion-body">
 <p>Use PuTTY</p>
 </div>
@@ -367,7 +367,7 @@ <h3 class="accordion-header" id="headingSpoiler1">
   <h3 class="accordion-header" id="headingSpoiler2">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="eye"></i></div>MacOS</h3>
 </button>
-<div id="collapseSpoiler2" class="accordion-collapse collapse" aria-labelledby="headingSpoiler2" data-bs-parent="#accordionSpoiler2">
+<div id="collapseSpoiler2" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler2" aria-labelledby="headingSpoiler2">
 <div class="accordion-body">
 <p>Use Terminal.app</p>
 </div>
@@ -380,7 +380,7 @@ <h3 class="accordion-header" id="headingSpoiler2">
   <h3 class="accordion-header" id="headingSpoiler3">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="eye"></i></div>Linux</h3>
 </button>
-<div id="collapseSpoiler3" class="accordion-collapse collapse" aria-labelledby="headingSpoiler3" data-bs-parent="#accordionSpoiler3">
+<div id="collapseSpoiler3" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler3" aria-labelledby="headingSpoiler3">
 <div class="accordion-body">
 <p>Use Terminal</p>
 </div>
diff --git a/instructor/introduction.html b/instructor/introduction.html
index cb6ebe9..3338937 100644
--- a/instructor/introduction.html
+++ b/instructor/introduction.html
@@ -287,7 +287,7 @@ <h3 class="card-title">Objectives</h3>
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
 <div class="accordion-body">
 <p>Inline instructor notes can help inform instructors of timing
 challenges associated with the lessons. They appear in the “Instructor
@@ -319,7 +319,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Output</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -348,7 +348,7 @@ <h3 class="callout-title">Challenge 2: how do you nest solutions within
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>You can add a line with at least three colons and a
 <code>solution</code> tag.</p>
diff --git a/introduction.html b/introduction.html
index 59831fb..789aef5 100644
--- a/introduction.html
+++ b/introduction.html
@@ -302,7 +302,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Output</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -331,7 +331,7 @@ <h3 class="callout-title">Challenge 2: how do you nest solutions within
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>You can add a line with at least three colons and a
 <code>solution</code> tag.</p>
diff --git a/md5sum.txt b/md5sum.txt
index a878971..904ee25 100644
--- a/md5sum.txt
+++ b/md5sum.txt
@@ -2,7 +2,7 @@
 "CODE_OF_CONDUCT.md" "c93c83c630db2fe2462240bf72552548" "site/built/CODE_OF_CONDUCT.md" "2022-08-05"
 "LICENSE.md" "b24ebbb41b14ca25cf6b8216dda83e5f" "site/built/LICENSE.md" "2023-04-07"
 "config.yaml" "78527fcaaab88132938042a98642abe4" "site/built/config.yaml" "2024-02-23"
-"index.md" "7ef0d1be41d6b43d8a64d5c9f1f77bed" "site/built/index.md" "2024-02-23"
+"index.md" "32d95483fb601dec3f3a5ea17e8b9bc5" "site/built/index.md" "2024-02-23"
 "links.md" "8184cf4149eafbf03ce8da8ff0778c14" "site/built/links.md" "2022-04-22"
 "episodes/introduction.md" "6c55d31b41d322729fb3276f8d4371fc" "site/built/introduction.md" "2023-07-24"
 "instructors/instructor-notes.md" "63eca1767f6b7a73a86bb27da69bf71b" "site/built/instructor-notes.md" "2024-02-23"
diff --git a/pkgdown.yml b/pkgdown.yml
index 6c662a9..032c2eb 100644
--- a/pkgdown.yml
+++ b/pkgdown.yml
@@ -2,5 +2,5 @@ pandoc: 2.19.2
 pkgdown: 2.0.7
 pkgdown_sha: ~
 articles: {}
-last_built: 2024-02-23T23:53Z
+last_built: 2024-02-23T23:57Z