chat: use full lines for messages on mobile

panikweb_templates/static/css/_specifics.scss

@@ -1962,6 +1962,18 @@ div.chat-area {
 	color: #666;
 }
 
+@media screen and (max-width: 760px) {
+    #chat span.from {
+        display: block;
+        position: static;
+        width: auto;
+    }
+    #chat span.content {
+        display: block;
+        padding-left: 2rem;
+    }
+}
+
 h1.top > span.chat.with-logo {
 	position: relative;
 	left: 140px;