@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);

/* Templates:
 * http://userstyles.org/styles/1253
 * http://userstyles.org/styles/1418
 */

 #search-container
  {
    max-width: 35px !important; 
  }
 #search-container > #searchbar .searchbar-textbox
  {
    display: none ! important; 
  }

 #search-container:focus,
 #search-container:hover
  {
    max-width: none !important; 
  }
 #search-container:hover > #searchbar .searchbar-textbox,
 #search-container > #searchbar .searchbar-textbox[focused="true"]
  {
    display: -moz-box !important; 

    /* choose a width that suits you */
    width: 30em !important; 
  }