Remove boxes around code comments

app/assets/javascripts/notes/components/noteable_discussion.vue

@@ -394,7 +394,7 @@ Please check your network connection and try again.`;
                   <div class="discussion-with-resolve-btn">
                     <button
                       type="button"
-                      class="js-vue-discussion-reply btn btn-text-field mr-sm-2 qa-discussion-reply"
+                      class="js-vue-discussion-reply btn btn-text-field qa-discussion-reply"
                       title="Add a reply"
                       @click="showReplyForm"
                     >
@@ -403,7 +403,7 @@ Please check your network connection and try again.`;
                     <div v-if="discussion.resolvable">
                       <button
                         type="button"
-                        class="btn btn-default mr-sm-2"
+                        class="btn btn-default ml-sm-2"
                         @click="resolveHandler();"
                       >
                         <i v-if="isResolving" aria-hidden="true" class="fa fa-spinner fa-spin"></i>

app/assets/stylesheets/framework/timeline.scss

@@ -36,7 +36,6 @@
   &:target,
   &.target {
     background: $line-target-blue;
-    margin-bottom: $gl-padding;
 
     &.system-note .note-body .note-text.system-note-commit-list::after {
       background: linear-gradient(rgba($line-target-blue, 0.1) -100px, $line-target-blue 100%);

app/assets/stylesheets/pages/note_form.scss

@@ -255,7 +255,6 @@ table {
     display: flex;
   }
 
-
   .discussion-actions {
     display: table;
 
@@ -276,9 +275,11 @@ table {
     }
   }
 
+  @include media-breakpoint-down(xs) {
     .btn {
       width: 100%;
     }
+  }
 
   .btn-text-field {
     @include media-breakpoint-down(xs) {

app/assets/stylesheets/pages/notes.scss

@@ -27,8 +27,10 @@ $note-form-margin-left: 72px;
   }
 }
 
-.main-notes-list {
+.issuable-discussion {
+  .main-notes-list {
     @include vertical-line(36px);
+  }
 }
 
 .notes {
@@ -76,11 +78,11 @@ $note-form-margin-left: 72px;
     .card {
       border: 0;
     }
+  }
 
   li.note {
     border-bottom: 1px solid $border-color;
   }
-  }
 
   .replies-toggle {
     background-color: $gray-light;
@@ -161,19 +163,6 @@ $note-form-margin-left: 72px;
     position: relative;
     border-bottom: 0;
 
-    &:target,
-    &.target {
-      border-bottom: 1px solid $white-normal;
-
-      &:not(:first-child) {
-        border-top: 1px solid $white-normal;
-      }
-
-      .timeline-entry-inner {
-        border-bottom: 0;
-      }
-    }
-
     &.being-posted {
       pointer-events: none;
       opacity: 0.5;
@@ -461,7 +450,7 @@ $note-form-margin-left: 72px;
     font-family: $regular-font;
 
     td {
-      border: 1px solid $white-normal;
+      border: 1px solid $border-color;
       border-left: 0;
 
       &.notes_content {
@@ -503,8 +492,6 @@ $note-form-margin-left: 72px;
   }
 
   .note-wrapper {
-    @include outline-comment();
-
     &.system-note {
       border: 0;
       margin-left: 20px;
@@ -518,10 +505,6 @@ $note-form-margin-left: 72px;
 }
 
 .commit-diff {
-  .notes {
-    @include vertical-line(52px);
-  }
-
   .notes_content {
     background-color: $white-light;
   }
@@ -937,12 +920,6 @@ $note-form-margin-left: 72px;
     border-bottom: 1px solid $border-color;
   }
 
-  .note-wrapper.outlined {
-    margin: 0;
-    border: 0;
-    border-radius: 0;
-  }
-
   .discussion-form-container {
     padding: $gl-padding;
   }

app/views/shared/notes/_note.html.haml

@@ -5,7 +5,7 @@
 - note_editable = can?(current_user, :admin_note, note)
 - note_counter = local_assigns.fetch(:note_counter, 0)
 
-%li.timeline-entry.note-wrapper.outlined{ id: dom_id(note),
+%li.timeline-entry.note-wrapper{ id: dom_id(note),
   class: ["note", "note-row-#{note.id}", ('system-note' if note.system)],
   data: { author_id: note.author.id,
     editable: note_editable,