diff --git a/src/addons/block/learningplans/services/block-handler.ts b/src/addons/block/learningplans/services/block-handler.ts
index 774ddad1c..38afe6a04 100644
--- a/src/addons/block/learningplans/services/block-handler.ts
+++ b/src/addons/block/learningplans/services/block-handler.ts
@@ -34,8 +34,6 @@ export class AddonBlockLearningPlansHandlerService extends CoreBlockBaseHandler
      * @return Data or promise resolved with the data.
      */
     getDisplayData(): CoreBlockHandlerData {
-        // @todo
-
         return {
             title: 'addon.block_learningplans.pluginname',
             class: 'addon-block-learning-plans',
diff --git a/src/addons/competency/pages/plan/plan.html b/src/addons/competency/pages/plan/plan.html
index 19e76d108..d95cd3f41 100644
--- a/src/addons/competency/pages/plan/plan.html
+++ b/src/addons/competency/pages/plan/plan.html
@@ -65,7 +65,7 @@
         </ion-card>
         <ion-card *ngIf="plan">
             <ion-card-header class="ion-text-wrap">
-                <h2>{{ 'addon.competency.learningplancompetencies' | translate }}</h2>
+                <ion-card-title>{{ 'addon.competency.learningplancompetencies' | translate }}</ion-card-title>
             </ion-card-header>
             <ion-list>
                 <ion-item class="ion-text-wrap" *ngIf="plan.competencycount == 0">
diff --git a/src/addons/mod/forum/services/forum.ts b/src/addons/mod/forum/services/forum.ts
index c9ee8c548..901f138ba 100644
--- a/src/addons/mod/forum/services/forum.ts
+++ b/src/addons/mod/forum/services/forum.ts
@@ -49,8 +49,6 @@ declare module '@singletons/events' {
 
 /**
  * Service that provides some features for forums.
- *
- * @todo Add all content.
  */
 @Injectable({ providedIn: 'root' })
 export class AddonModForumProvider {
diff --git a/src/addons/mod/quiz/pages/review/review.html b/src/addons/mod/quiz/pages/review/review.html
index 6ed4b8fe7..5b602f6fe 100644
--- a/src/addons/mod/quiz/pages/review/review.html
+++ b/src/addons/mod/quiz/pages/review/review.html
@@ -23,8 +23,8 @@
         <ion-card *ngIf="attempt">
             <ion-card-header class="ion-text-wrap">
                 <ion-card-title>
-                    <span *ngIf="attempt.preview">{{ 'addon.mod_quiz.reviewofpreview' | translate }}</span>
-                    <span *ngIf="!attempt.preview">{{ 'addon.mod_quiz.reviewofattempt' | translate:{$a: attempt.attempt} }}</span>
+                    <ng-container *ngIf="attempt.preview">{{ 'addon.mod_quiz.reviewofpreview' | translate }}</ng-container>
+                    <ng-container *ngIf="!attempt.preview">{{ 'addon.mod_quiz.reviewofattempt' | translate:{$a: attempt.attempt} }}</ng-container>
                 </ion-card-title>
             </ion-card-header>
             <ion-list lines="none">
diff --git a/src/addons/mod/workshop/workshop-lazy.module.ts b/src/addons/mod/workshop/workshop-lazy.module.ts
index 14fec0473..7199432d5 100644
--- a/src/addons/mod/workshop/workshop-lazy.module.ts
+++ b/src/addons/mod/workshop/workshop-lazy.module.ts
@@ -35,7 +35,7 @@ const routes: Routes = [
         canDeactivate: [CanLeaveGuard],
     },
     {
-        path: ':courseId/:cmId/:submissionId/edit', // @todo
+        path: ':courseId/:cmId/:submissionId/edit',
         component: AddonModWorkshopEditSubmissionPage,
         canDeactivate: [CanLeaveGuard],
     },
diff --git a/src/core/features/grades/pages/course/course.scss b/src/core/features/grades/pages/course/course.scss
index 308fbe906..601e79771 100644
--- a/src/core/features/grades/pages/course/course.scss
+++ b/src/core/features/grades/pages/course/course.scss
@@ -1,7 +1,18 @@
 @import "~theme/globals";
 
-// @todo darkmode
-// @todo RTL layout
+:host {
+    --header-background: var(--white);
+    --odd-cell-background: var(--gray-lighter);
+    --even-cell-background: var(--white);
+    --icon-color: #999999;
+}
+
+:host-context(body.dark) {
+    --header-background: var(--black);
+    --odd-cell-background: var(--gray-darker);
+    --even-cell-background: var(--black);
+    --icon-color: #eeeeee;
+}
 
 :host-context(ion-app.md) {
     --border-color: var(--ion-item-border-color, var(--ion-border-color, var(--ion-color-step-150, rgba(0, 0, 0, .13))));
@@ -18,16 +29,12 @@
     font-size: 16px;
     color: var(--ion-text-color);
 
-    // @include darkmode() {
-    //   color: $core-dark-text-color;
-    // }
-
     tr {
         border-bottom: 1px solid var(--border-color);
     }
 
     th, td {
-        padding: 10px 0 10px 10px;
+        @include padding(10px, 10px, 10px, null);
         vertical-align: top;
         white-space: normal;
         text-align: start;
@@ -36,11 +43,7 @@
     thead th {
         vertical-align: bottom;
         font-weight: bold;
-        background-color: var(--white);
-
-    //   @include darkmode() {
-    //     background-color: $black;
-    //   }
+        background-color: var(--header-background);
     }
 
     tbody th {
@@ -48,15 +51,15 @@
     }
 
     #gradeitem {
-        padding-left: 5px;
+        @include padding(null, null, null, 5px);
     }
 
     .core-grades-table-gradeitem {
-        padding-left: 5px;
+        @include padding(null, null, null, 5px);
         font-weight: bold;
 
         &.column-itemname {
-            padding-left: 0;
+            @include padding(null, null, null, 0);
         }
 
         img {
@@ -65,17 +68,17 @@
         }
 
         ion-icon {
-            color: #999999;
+            color: var(--icon-color);
         }
 
         span {
-            margin-left: 5px;
+            @include margin(null, null, null, 5px);
         }
 
     }
 
     .core-grades-table-feedback {
-        padding-left: 5px;
+        @include padding(null, null, null, 5px);
 
         .no-overflow {
             overflow: auto;
@@ -89,27 +92,16 @@
     }
 
     .odd {
-
         td, th, th[aria-current="page"] {
-            background-color: var(--gray-lighter);
-
-            // @include darkmode() {
-            //     background-color: $gray-darker;
-            // }
+            background-color: var(--odd-cell-background);
         }
 
     }
 
     .even {
-
         td, th, th[aria-current="page"] {
-            background-color: var(--white);
-
-            // @include darkmode() {
-            //     background-color: $black;
-            // }
+            background-color: var(--even-cell-background);
         }
-
     }
 
     .core-grades-grade-clickable {