Fix search form on chromium

wiki/templates/wiki/base.html

@@ -38,7 +38,7 @@
         {% endblock %}
         <div class="nav-collapse collapse navbar-responsive-collapse">
           <form class="navbar-form pull-right-block-on-responsive" id="navbar_wiki_search" method="GET" action="{% url 'wiki:search' %}">
-            <div class="input-group">
+            <div class="input-group" style="width: 120px;">
               <input type="search" class="form-control search-query" name="q" placeholder="{% trans "Search..." %}" />
               <span class="input-group-btn">
                 <button class="btn btn-default" type="button">