Full screen div at any screen and resolution

Add this in your javascript file and call this file after jquery file

function fullsize() 
var new_height = window.innerHeight; // get new height of window
var fullsize = new_height; 
fullsize = parseInt(fullsize) + 'px'; // concatenate string get output in px format  
jQuery("div").css('height',fullsize); // changing height of div
jQuery(window).bind('resize', fullsize); // event is call at screen change ( resolution changes )

Note: you can replace ‘jQuery’ with ‘$’ if there is any issue due to ‘jQuery’ Keyword.