diff --git a/talks/_templates/grid.html b/talks/_templates/grid.html
index 3868faf..457d994 100644
--- a/talks/_templates/grid.html
+++ b/talks/_templates/grid.html
@@ -18,8 +18,8 @@
                     <td></td>
                 {% elif not talk.skip %}
                     <td id="t-cell-{{talk.id}}"  class="talk
-                    {% if talk.room == '*' -%}allrooms{%-endif-%}
-                    {% for t in talk.tags -%} tag-{{t|replace(' ', '_')}} {%endfor-%}
+                    {% if talk.room == '*' -%}allrooms{%endif-%}
+                    {% for t in talk.tags %} tag-{{t|replace(' ', '_')}} {%endfor-%}
                     "
                         rowspan="{{talk.duration // timestep}}"
                         {% if talk.room == '*' %}colspan="{{rooms|length}}"{%endif%}>
diff --git a/themes/hackit0x15/static/css/hackit.css b/themes/hackit0x15/static/css/hackit.css
index eafc0ba..06dde03 100644
--- a/themes/hackit0x15/static/css/hackit.css
+++ b/themes/hackit0x15/static/css/hackit.css
@@ -288,6 +288,10 @@ td.tag-presentazione_libro::before {
 td.tag-percorso_base::before {
   content: "\e146";
 }
+
+.talk.allrooms {
+    background-color: rgba(200,200,200,0.4);
+}
 /* tag speciali nei talk }}} */
 
 /* END TALK }}} */