'update_community_background'

UI/src/view/pages/Community.vue

 <template>
     <main>
-        <section class="my-5">
+        <section class="chat-pic1"><!-- maths comunity group creation -->
             <basic-vue-chat :new-message="message" :title="'Maths Community group'"
                 @newOwnMessage="onNewOwnMessageMaths" :initial-feed="feedMaths" />
             <!-- <chat-window :current-user-id="currentUserId" :rooms="rooms" :messages="messages" /> -->
         </section>
-        <section class="my-5">
+        <section class="chat-pic"><!-- science community group creation -->
             <basic-vue-chat :new-message="message" :title="'Science Community group'"
                 @newOwnMessage="onNewOwnMessageScience" :initial-feed="feedScience" />
             <!-- <chat-window :current-user-id="currentUserId" :rooms="rooms" :messages="messages" /> -->