Answers for "how to hide a div in css"

hide element using css

#tinynav1
{
  display:none
}

css hide element

.classname {
    display: none;
}

how to hide div in html

document.getElementById('elementName').hide();

hide a div

<div id="main"> 
  <p> Hide/show this div </p>
</div>

('#main').hide(); //to hide

// 2nd way, by injecting css using jquery
$("#main").css("display", "none");

hide in css

display:none;