次のコードを使用して、完全な背景、ボックス、ヘッダー、およびフッターをレンダリングしています。すべてがすべてのブラウザーでうまく機能します (ie8+、ie7 は気にしません)。しかし ie8 では、背景の周りに 1px の境界線がレンダリングされます。なんで?
<style type="text/css">
/*
start reset
http://meyerweb.com/eric/tools/css/reset/
*/
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
margin: 0;
padding: 0;
border: 0;
font-size: 100%;
font: inherit;
vertical-align: baseline;
}
article, aside, details, figcaption, figure,
footer, header, hgroup, menu, nav, section {
display: block;
}
body {
line-height: 1;
}
ol, ul {
list-style: none;
}
blockquote, q {
quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
content: '';
content: none;
}
table {
border-collapse: collapse;
border-spacing: 0;
}
/*
end reset
*/
.header, .footer
{
position: fixed;
z-index: 2;
left: 0px;
width: 100%;
background: white;
opacity: 0.4;
filter: alpha(opacity=40);
}
.header
{
top: 0;
height: 30px;
}
.footer
{
bottom: 0px;
height: 30px;
}
.box
{
position: relative;
float: right;
z-index: 2;
margin: 100px 100px 0 0;
width: 300px;
padding: 20px;
background: white;
-moz-box-shadow: 0 0 20px black;
-webkit-box-shadow: 0 0 20px black;
box-shadow: 0 0 20px black;
}
.background
{
position: fixed;
top: -50%;
left: -50%;
width: 200%;
height: 200%;
}
.background img
{
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
margin: auto;
min-width: 50%;
min-height: 50%;
}
p
{
font: 15px/2 Georgia, Serif;
text-indent: 40px;
}
</style>
</head>
<body>
<div class="header">
Vestibulum erat wisi.
</div>
<div class="box">
<p>
Vestibulum erat wisi, condimentum sed, commodo vitae, ornare sitamet, wisi. Aenean
fermentum, elit eget tincidunt condimentum, erosipsum rutrum orci, sagittis tempus
lacus enim ac dui. Donec non enimin turpis pulvinar facilisis. Ut felis. Praesent
dapibus, neque idcursus faucibus, tortor neque egestas augue, eu vulputate magna
eroseu erat. Aliquam erat volutpat. Nam dui mi, tincidunt quis, accumsanporttitor,
facilisis luctus, metus.
</p>
</div>
<div class="footer">
Vestibulum erat wisi.
</div>
<div class="background">
<img src="http://mslove88.files.wordpress.com/2011/10/mountain.jpg" alt="" />
</div>