diff --git a/addon/styles/addon.css b/addon/styles/addon.css
index bd43aaac..43cea548 100644
--- a/addon/styles/addon.css
+++ b/addon/styles/addon.css
@@ -39,10 +39,6 @@ a.old-version-button:hover, a.old-version-button:active {
   color: var(--color-button-secondary-text-hover);
 }
 
-main {
-  padding: 0 2em;
-}
-
 .es-header {
   padding: 0 var(--spacing-4);
   justify-content: start;
@@ -76,8 +72,6 @@ main {
   display: grid;
   gap: 3em;
   grid-template-columns: minmax(20ch, 80ch) 16em;
-  padding-top: var(--spacing-4);
-  padding-bottom: var(--spacing-4);
   justify-content: center;
 }
 
diff --git a/addon/styles/table-of-contents.css b/addon/styles/table-of-contents.css
deleted file mode 100644
index eccecaf5..00000000
--- a/addon/styles/table-of-contents.css
+++ /dev/null
@@ -1,67 +0,0 @@
-/* All the .es-sidebar styling should probably move to the ember-styleguide when we agree this is the right thing to do */
-.es-sidebar {
-  padding: var(--spacing-4) var(--spacing-4);
-  margin-left: calc(-1 * var(--spacing-4));
-  background-color: var(--color-gray-200);
-}
-
-.table-of-contents {
-  list-style-type: none;
-  padding-left: 0;
-  font-size: var(--font-size-base);
-  font-weight: var(--font-weight-3);
-}
-
-.sub-table-of-contents {
-  padding-left: var(--spacing-1);
-  font-size: var(--font-size-base);
-  font-weight: var(--font-weight-2);
-}
-
-.sub-table-of-contents .sub-table-of-contents {
-  padding-left: var(--spacing-3);
-  margin-bottom: 0;
-}
-
-.table-of-contents a:link {
-  background: none;
-}
-
-.sub-table-of-contents .toc-item a  {
-  display: block;
-  padding: var(--spacing-1);
-  border-radius: var(--radius);
-  line-height: var(--line-height-xs);
-  color: var(--color-gray-700);
-  border-left: 0 solid transparent;
-  transition: border-width .3s;
-}
-
-.sub-table-of-contents .toc-item a:hover {
-  border-left: 4px solid var(--color-gray-400);
-  border-radius: 0;
-}
-
-.sub-table-of-contents .toc-item.selected > a  {
-  border-left: 4px solid var(--color-brand-hc-dark);
-  border-radius: 0;
-}
-
-.table-of-contents li {
-  margin: 3px 0;
-}
-
-li.toc-heading {
-  margin-top: var(--spacing-4);
-  color: var(--color-gray-600);
-}
-
-li.toc-heading:first-child {
-  margin-top: 0;
-}
-
-@media (max-width: 844px) {
-  .table-of-contents {
-    font-size: var(--font-size-lg);
-  }
-}
diff --git a/package-lock.json b/package-lock.json
index c550150f..87c482b2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22,7 +22,7 @@
         "ember-href-to": "^5.0.0",
         "ember-power-select": "^6.0.0",
         "ember-showdown-shiki": "^1.0.3",
-        "ember-styleguide": "^8.3.0",
+        "ember-styleguide": "^10.0.0",
         "ember-tether": "^2.0.1",
         "ember-truth-helpers": "^3.0.0",
         "sanitize-html": "^2.11.0"
@@ -22327,9 +22327,9 @@
       }
     },
     "node_modules/ember-styleguide": {
-      "version": "8.3.0",
-      "resolved": "https://registry.npmjs.org/ember-styleguide/-/ember-styleguide-8.3.0.tgz",
-      "integrity": "sha512-FN0FNXDXFRoimaICswP7/5aSI8gH/sVO00ju134wbWeUR/xMHE1bA/xT1P8UGPPXM6D9IE6mrxdt9Pf2iyaYRg==",
+      "version": "10.0.0",
+      "resolved": "https://registry.npmjs.org/ember-styleguide/-/ember-styleguide-10.0.0.tgz",
+      "integrity": "sha512-Pyni+Wuoqdo2z0DynD+huAo9/xFlhMsXoRYE2Ij+UaLJaMGAtHPPkFbVKLa8h5E6zEaQmobhpy3kXMSfVpEYrw==",
       "dependencies": {
         "@ember/render-modifiers": "^2.0.2",
         "@glimmer/component": "^1.0.4",
@@ -22350,7 +22350,7 @@
         "static-postcss-addon-tree": "^2.0.0"
       },
       "engines": {
-        "node": "12.* || 14.* || >= 16"
+        "node": "18.* || >= 20"
       }
     },
     "node_modules/ember-styleguide/node_modules/broccoli-merge-trees": {
@@ -58771,9 +58771,9 @@
       }
     },
     "ember-styleguide": {
-      "version": "8.3.0",
-      "resolved": "https://registry.npmjs.org/ember-styleguide/-/ember-styleguide-8.3.0.tgz",
-      "integrity": "sha512-FN0FNXDXFRoimaICswP7/5aSI8gH/sVO00ju134wbWeUR/xMHE1bA/xT1P8UGPPXM6D9IE6mrxdt9Pf2iyaYRg==",
+      "version": "10.0.0",
+      "resolved": "https://registry.npmjs.org/ember-styleguide/-/ember-styleguide-10.0.0.tgz",
+      "integrity": "sha512-Pyni+Wuoqdo2z0DynD+huAo9/xFlhMsXoRYE2Ij+UaLJaMGAtHPPkFbVKLa8h5E6zEaQmobhpy3kXMSfVpEYrw==",
       "requires": {
         "@ember/render-modifiers": "^2.0.2",
         "@glimmer/component": "^1.0.4",
diff --git a/package.json b/package.json
index 1bd3a7ba..f7a1fa49 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "ember-href-to": "^5.0.0",
     "ember-power-select": "^6.0.0",
     "ember-showdown-shiki": "^1.0.3",
-    "ember-styleguide": "^8.3.0",
+    "ember-styleguide": "^10.0.0",
     "ember-tether": "^2.0.1",
     "ember-truth-helpers": "^3.0.0",
     "sanitize-html": "^2.11.0"