JSFiddle - React, Tailwind, and code Playground
HTML
<div id="home">
<h1>Site Name</h1>
<p>This is slogan</p>
</div>
CSS
html, body{margin:0;padding:0}
#home {
float:left;
width:100%;
height:100%;
background: url(http://wallpaper-fun.ophibian.com/wallpapers/wallpaper_08.jpg) no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}
#home h1, #home p{text-align:center;}
JavaScript
$(document).ready(function(){
$('#home').css({'width':$(window).width(),'height':$(window).height()});
});
$(window).resize(function() {
$('#home').css({'width':$(window).width(),'height':$(window).height()});
});