Update bskyweb html styles

bskyweb/templates/base.html

@@ -69,11 +69,19 @@
       text-decoration: underline;
     }
 
+    /* Styling hacks */
+    *[data-word-wrap] {
+      word-break: break-word;
+    }
+
     /* ProseMirror */
     .ProseMirror {
       font: 18px -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
       min-height: 140px;
     }
+    .ProseMirror-dark {
+      color: white;
+    }
     .ProseMirror p {
       margin: 0;
     }