fix (#14338)

[FIX] Unread line and new day separator was not aligned

app/theme/client/imports/general/base.css

@@ -160,6 +160,7 @@ button {
 .first-unread .body {
 	&::before {
 		position: absolute;
+		z-index: 1;
 		top: 0;
 		left: 0;
 
@@ -199,6 +200,22 @@ button {
 	}
 }
 
+.message.new-day.first-unread {
+	&::after {
+		border-color: var(--rc-color-error);
+	}
+
+	& .body {
+		&::before {
+			display: none;
+		}
+
+		&::after {
+			top: -26px;
+		}
+	}
+}
+
 .hidden {
 	display: none;
 }