diff --git a/addons/mail/static/src/components/popover_view/popover_view.scss b/addons/mail/static/src/components/popover_view/popover_view.scss
index 4b6599ce46f..fd072f45fda 100644
--- a/addons/mail/static/src/components/popover_view/popover_view.scss
+++ b/addons/mail/static/src/components/popover_view/popover_view.scss
@@ -4,20 +4,9 @@
 
 .o_PopoverView {
     z-index: $zindex-modal + 1;
-    border: $border-width solid;
 }
 
 .o_PopoverView_channelInvitationForm {
     width: Min(95vw, 400px);
     max-height: Min(calc(100vh - 140px), 530px);
 }
-
-// ------------------------------------------------------------------
-// Style
-// ------------------------------------------------------------------
-
-.o_PopoverView {
-    border-color: gray('300');
-    background-color: $white;
-    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
-}
diff --git a/addons/mail/static/src/components/popover_view/popover_view.xml b/addons/mail/static/src/components/popover_view/popover_view.xml
index 4aad3ae770e..76a222206ef 100644
--- a/addons/mail/static/src/components/popover_view/popover_view.xml
+++ b/addons/mail/static/src/components/popover_view/popover_view.xml
@@ -3,7 +3,7 @@
 
     <t t-name="mail.PopoverView" owl="1">
         <t t-if="popoverView">
-            <div class="o_PopoverView" t-attf-class="{{ className }}" t-ref="root">
+            <div class="o_PopoverView border bg-white shadow-sm" t-attf-class="{{ className }}" t-ref="root">
                 <t
                     t-component="constructor.components[popoverView.contentComponentName]"
                     className="popoverView.contentClassName"