Add the following to your Javascript editor in Qualtrics:
(click the link in upper righthand corner to copy)
Qualtrics.SurveyEngine.addOnload(function()
{
this.getQuestionContainer().show();
});
Qualtrics.SurveyEngine.addOnReady(function()
{
var delayTime = 10000 //This is the time of delay
var that = this;
setTimeout(function(){that.getQuestionContainer().hide()}, delayTime);
});
Qualtrics.SurveyEngine.addOnUnload(function()
{
/*Place your JavaScript here to run when the page is unloaded*/
});
See it in action:
(refresh the page to see it again)