diff --git a/atlas/templates/atlas/case_display_block.html b/atlas/templates/atlas/case_display_block.html
index 7740fe50..da5b01a8 100755
--- a/atlas/templates/atlas/case_display_block.html
+++ b/atlas/templates/atlas/case_display_block.html
@@ -447,7 +447,7 @@
         <b>Collections:</b>
 
         {% if can_edit %}
-            <button
+            <button class="btn btn-sm btn-primary"
                 hx-get="{% url 'atlas:case_collection_form' case.pk %}"
                 hx-target="#collection-form">
                 Add to collection</button>
@@ -459,7 +459,7 @@
                     <a href="{% url 'atlas:collection_detail' pk=collection.pk %}">{{ collection.name }}</a>
                     {% if can_edit %}
                         <button
-                            class="btn btn-danger btn-sm remove-button"
+                            class="btn btn-sm btn-outline-danger remove-button"
                             hx-post="{% url 'atlas:remove_case_from_collection' case.pk collection.pk %}"
                             hx-target="#collection-{{ collection.pk }}"
                             hx-swap="outerHTML"
diff --git a/atlas/templates/atlas/partials/collection_list_item.html b/atlas/templates/atlas/partials/collection_list_item.html
index c6c97cb6..2ec4b266 100644
--- a/atlas/templates/atlas/partials/collection_list_item.html
+++ b/atlas/templates/atlas/partials/collection_list_item.html
@@ -1,7 +1,7 @@
 <li id="collection-{{ collection.pk }}">
   <a href="{% url 'atlas:collection_detail' pk=collection.pk %}">{{ collection.name }}</a>
   {% if can_edit %}
-    <button class="btn btn-danger btn-sm remove-button"
+    <button class="btn btn-sm btn-outline-danger remove-button"
             hx-post="{% url 'atlas:remove_case_from_collection' case.pk collection.pk %}"
             hx-target="#collection-{{ collection.pk }}"
             hx-swap="outerHTML"