Background cố định width full page.
<style>
body {
background: url(https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgLur71ptSDEu17Pl5gB070L-Og5hyQYd_hWTMOavgrKFuNmMnvtEAPLVhXvAuCY-sICMWQu16Kc2RHgfZFA6fdIDtY7mJO0H3Y6WFkat4ZWvMR2yEOd4vZdIUaouSeDKdroRWVN-pwq8gi/s1600/panda.png) no-repeat center center fixed;
background-size: cover;
margin:0;
}
</style>
Background tự động chuyển đổi ảnh full page.
<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js' type='text/javascript'></script>
<script type='text/javascript'>
//<![CDATA[
/*
* jQuery Backstretch
* Version 1.2.8
* http://srobbin.com/jquery-plugins/jquery-backstretch/
* Add a dynamically-resized background image to the page
* Copyright (c) 2012 Scott Robbin (srobbin.com)
* Licensed under the MIT license
* https://raw.github.com/srobbin/jquery-backstretch/master/LICENSE.txt
*/
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//]]>
</script>
<script>
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var images = [
"https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhommkc6-72pPyZ_KfVv9h_Q-Bzv3NSp5V33hvys7eXOlORthmCdcwxrv2ss0yfZYloTfMghcKEiQAu-fYmi6rhcba2QdToTmUbt_ZYD6jSRVUDutoAN06qT0k0pZHI0WCjrL0f0UKoOSY/s1600/a_cherry_winter___wallpaper_by_ineedchemicalx-d5hjqbp.jpg",
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"https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjP36aPZyx6Dq8Vm4IJhHf5fGXoGOBTC7guNYpc_p7FveY-HFFAlLGvqyw4R26OFgLPSaC5gelG5eHenD5d0F9GbaYwqcsMPDkcDRCp38OZyMT4XU5j2S1zXGRuqqMTrtSYu4chYkOJfts/s1600/wallpaper-2069756.jpg",
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];
$(images).each(function(){
$('<img/>')[0].src = this;
});
var index = 0;
$.backstretch(images[index], {speed: 1000});
var slideshow = setInterval(function() {
index = (index >= images.length - 1) ? 0 : index + 1;
$.backstretch(images[index]);
}, 5000);
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</script>