diff --git src/bp-templates/bp-nouveau/buddypress/activity/widget.php src/bp-templates/bp-nouveau/buddypress/activity/widget.php
index e9b754cd3..70cd0da60 100644
--- src/bp-templates/bp-nouveau/buddypress/activity/widget.php
+++ src/bp-templates/bp-nouveau/buddypress/activity/widget.php
@@ -3,7 +3,7 @@
  * BP Nouveau Activity Widget template.
  *
  * @since 3.0.0
- * @version 3.0.0
+ * @version 9.0.0
  */
 ?>
 
@@ -16,11 +16,13 @@
 			bp_the_activity();
 		?>
 
-			<?php if ( bp_activity_has_content() ) : ?>
+			<blockquote>
 
-				<blockquote>
+				<?php if ( bp_activity_has_content() ) : ?>
 
-					<?php bp_activity_content_body(); ?>
+					<div class="<?php bp_activity_css_class(); ?>">
+						<?php bp_activity_content_body(); ?>
+					</div>
 
 					<footer>
 
@@ -42,13 +44,15 @@
 
 					</footer>
 
-				</blockquote>
+					<?php else : ?>
 
-			<?php else : ?>
+						<div class="<?php bp_activity_css_class(); ?>">
+							<p><?php bp_activity_action(); ?></p>
+						</div>
 
-				<p><?php bp_activity_action(); ?></p>
+					<?php endif; ?>
 
-			<?php endif; ?>
+			</blockquote>
 
 		<?php endwhile; ?>
 
diff --git src/bp-templates/bp-nouveau/common-styles/_bp_widgets.scss src/bp-templates/bp-nouveau/common-styles/_bp_widgets.scss
index 511652155..8a2424f11 100644
--- src/bp-templates/bp-nouveau/common-styles/_bp_widgets.scss
+++ src/bp-templates/bp-nouveau/common-styles/_bp_widgets.scss
@@ -52,6 +52,74 @@
 		}
 	}
 
+	div.activity-list {
+
+		blockquote {
+			padding: 0;
+			border: none;
+
+			.activity-item {
+
+				&:not(.mini) {
+					position: relative;
+					box-shadow: 1px 0 4px rgba(0, 0, 0, 0.15);
+					padding: 0 1em;
+
+					&:after,
+					&:before {
+						position: absolute;
+						left: 15px;
+						display: block;
+						width: 0;
+						height: 0;
+						border-style: solid;
+						border-color: transparent;
+						content: "";
+					}
+
+					&:before {
+						bottom: -18px;
+						border-top-color: rgba(0, 0, 0, 0.15);
+						border-width: 9px;
+						left: 14px;
+					}
+
+					&:after {
+						bottom: -16px;
+						border-top-color: #fff;
+						border-width: 8px;
+					}
+				}
+
+				&.mini {
+
+					.avatar {
+						display: inline-block;
+						width: 20px;
+						height: 20px;
+						vertical-align: middle;
+						margin-right: 2px;
+					}
+				}
+			}
+		}
+
+		footer {
+			display: flex;
+			align-items: center;
+
+			img.avatar {
+				display: inline-block;
+				border: none;
+				margin-right: 0.5em;
+			}
+
+			.activity-time-since {
+				font-size: 90%;
+			}
+		}
+	}
+
 	.avatar-block {
 
 		@include flex-box-dir($flex-dir: row, $flex-wrap: wrap);
diff --git src/bp-templates/bp-nouveau/css/buddypress-rtl.css src/bp-templates/bp-nouveau/css/buddypress-rtl.css
index 20f7c1a32..deda1732c 100644
--- src/bp-templates/bp-nouveau/css/buddypress-rtl.css
+++ src/bp-templates/bp-nouveau/css/buddypress-rtl.css
@@ -4678,6 +4678,64 @@ body.create-blog #buddypress .success {
 	border-bottom: 0;
 }
 
+.buddypress.widget div.activity-list blockquote {
+	padding: 0;
+	border: none;
+}
+
+.buddypress.widget div.activity-list blockquote .activity-item:not(.mini) {
+	position: relative;
+	box-shadow: -1px 0 4px rgba(0, 0, 0, 0.15);
+	padding: 0 1em;
+}
+
+.buddypress.widget div.activity-list blockquote .activity-item:not(.mini):after, .buddypress.widget div.activity-list blockquote .activity-item:not(.mini):before {
+	position: absolute;
+	right: 15px;
+	display: block;
+	width: 0;
+	height: 0;
+	border-style: solid;
+	border-color: transparent;
+	content: "";
+}
+
+.buddypress.widget div.activity-list blockquote .activity-item:not(.mini):before {
+	bottom: -18px;
+	border-top-color: rgba(0, 0, 0, 0.15);
+	border-width: 9px;
+	right: 14px;
+}
+
+.buddypress.widget div.activity-list blockquote .activity-item:not(.mini):after {
+	bottom: -16px;
+	border-top-color: #fff;
+	border-width: 8px;
+}
+
+.buddypress.widget div.activity-list blockquote .activity-item.mini .avatar {
+	display: inline-block;
+	width: 20px;
+	height: 20px;
+	vertical-align: middle;
+	margin-left: 2px;
+}
+
+.buddypress.widget div.activity-list footer {
+	display: flex;
+	align-items: center;
+}
+
+.buddypress.widget div.activity-list footer img.avatar {
+	display: inline-block;
+	border: none;
+	margin-left: 0.5em;
+}
+
+.buddypress.widget div.activity-list footer .activity-time-since {
+	font-size: 90%;
+}
+
 .buddypress.widget .avatar-block {
 	display: -moz-flex;
 	display: -ms-flex;
diff --git src/bp-templates/bp-nouveau/css/buddypress.css src/bp-templates/bp-nouveau/css/buddypress.css
index 7cc80ca7f..378e176c2 100644
--- src/bp-templates/bp-nouveau/css/buddypress.css
+++ src/bp-templates/bp-nouveau/css/buddypress.css
@@ -4678,6 +4678,64 @@ body.create-blog #buddypress .success {
 	border-bottom: 0;
 }
 
+.buddypress.widget div.activity-list blockquote {
+	padding: 0;
+	border: none;
+}
+
+.buddypress.widget div.activity-list blockquote .activity-item:not(.mini) {
+	position: relative;
+	box-shadow: 1px 0 4px rgba(0, 0, 0, 0.15);
+	padding: 0 1em;
+}
+
+.buddypress.widget div.activity-list blockquote .activity-item:not(.mini):after, .buddypress.widget div.activity-list blockquote .activity-item:not(.mini):before {
+	position: absolute;
+	left: 15px;
+	display: block;
+	width: 0;
+	height: 0;
+	border-style: solid;
+	border-color: transparent;
+	content: "";
+}
+
+.buddypress.widget div.activity-list blockquote .activity-item:not(.mini):before {
+	bottom: -18px;
+	border-top-color: rgba(0, 0, 0, 0.15);
+	border-width: 9px;
+	left: 14px;
+}
+
+.buddypress.widget div.activity-list blockquote .activity-item:not(.mini):after {
+	bottom: -16px;
+	border-top-color: #fff;
+	border-width: 8px;
+}
+
+.buddypress.widget div.activity-list blockquote .activity-item.mini .avatar {
+	display: inline-block;
+	width: 20px;
+	height: 20px;
+	vertical-align: middle;
+	margin-right: 2px;
+}
+
+.buddypress.widget div.activity-list footer {
+	display: flex;
+	align-items: center;
+}
+
+.buddypress.widget div.activity-list footer img.avatar {
+	display: inline-block;
+	border: none;
+	margin-right: 0.5em;
+}
+
+.buddypress.widget div.activity-list footer .activity-time-since {
+	font-size: 90%;
+}
+
 .buddypress.widget .avatar-block {
 	display: -moz-flex;
 	display: -ms-flex;