/* Reba's Love Boutique page only - Page ID 18144 */
#id_18144,
.page_18144,
body.page_18144,
body#id_18144 {
  background: hotpink !important;
}
<style>
/* Reba’s Love Store Page Styling */

#id_18144 {
  background-color: #fff0f5;
}
</style>