@-moz-document url(about:home){
/* hide sessionRestore container on the about:home page */
#sessionRestoreContainer { display: none !important; }
}

You can hide the "Restore Previous Session" box with code in userContent.css * http://kb.mozillazine.org/userContent.css * http://kb.mozillazine.org/Editing_configuration You can use the ChromEdit Plus or Stylish extension to have easier access to the customization files. * ChromEdit Plus: http://webdesigns.ms11.net/chromeditp.html ----- <pre><nowiki>@-moz-document url(about:home){ /* hide sessionRestore container on the about:home page */ #sessionRestoreContainer { display: none !important; } } </nowiki></pre>