我刚开始弄乱样板模板。而且我无法让我的背景图像出现。
CSS：
body {
font-size: 1em;
line-height: 1.4;
background-image: url (img/bg2.png);
background-repeat: no-repeat;
}
一些见解将不胜感激我几乎是一个业余爱好者
谢谢 ：）
编辑：
完整的CSS在这里：
/*
* HTML5 Boilerplate
*
* What follows is the result of much research on cross-browser styling.
* Credit left inline and big thanks to Nicolas Gallagher, Jonathan Neal,
* Kroc Camen, and the H5BP dev community and team.
*/
/* ==========================================================================
Base styles: opinionated defaults
========================================================================== */
html,
button,
input,
select,
textarea {
color: #222;
}
body {
font-size: 1em;
line-height: 1.4;
background-image:url("bg2.png");
}
html body {
background-image:url("bg2.png")!important;
}
/*
* Remove text-shadow in selection highlight: h5bp.com/i
* These selection rule sets have to be separate.
* Customize the background color to match your design.
*/
::-moz-selection {
background: #b3d4fc;
text-shadow: none;
}
::selection {
background: #b3d4fc;
text-shadow: none;
}
/*
* A better looking default horizontal rule
*/
hr {
display: block;
height: 1px;
border: 0;
border-top: 1px solid #ccc;
margin: 1em 0;
padding: 0;
}
/*
* Remove the gap between images and the bottom of their containers: h5bp.com/i/440
*/
img {
vertical-align: middle;
}
/*
* Remove default fieldset styles.
*/
fieldset {
border: 0;
margin: 0;
padding: 0;
}
/*
* Allow only vertical resizing of textareas.
*/
textarea {
resize: vertical;
}
/* ==========================================================================
Chrome Frame prompt
========================================================================== */
.chromeframe {
margin: 0.2em 0;
background: #ccc;
color: #000;
padding: 0.2em 0;
}
/* ==========================================================================
Author's custom styles
========================================================================== */
#nav {
margin-left: -9px;
}
.logo{
display: block; margin-left: auto;margin-right: auto; margin-top:-300px; z-index:1;
}
.center
{
margin: 0 auto;
}
#nav {
margin-left: -9px;
}
ul{
list-style-type:none; margin-left:50px; padding:0; margin-top: 0px;
}
li{
float:left;
}
li a:link,li a:visited{
display:block;
height: 83px;
width:240px;
z-index:-1;
color:#ffffff;
background-color:#212121;
text-align:center;
padding:0px;
border: 0;
}
li a:hover,li a:active{
background-color:#171616;
}
/* ==========================================================================
Helper classes
========================================================================== */
/*
* Image replacement
*/
.ir {
background-color: transparent;
border: 0;
overflow: hidden;
/* IE 6/7 fallback */
*text-indent: -9999px;
}
.ir:before {
content: "";
display: block;
width: 0;
height: 150%;
}
/*
* Hide from both screenreaders and browsers: h5bp.com/u
*/
.hidden {
display: none !important;
visibility: hidden;
}
/*
* Hide only visually, but have it available for screenreaders: h5bp.com/v
*/
.visuallyhidden {
border: 0;
clip: rect(0 0 0 0);
height: 1px;
margin: -1px;
overflow: hidden;
padding: 0;
position: absolute;
width: 1px;
}
/*
* Extends the .visuallyhidden class to allow the element to be focusable
* when navigated to via the keyboard: h5bp.com/p
*/
.visuallyhidden.focusable:active,
.visuallyhidden.focusable:focus {
clip: auto;
height: auto;
margin: 0;
overflow: visible;
position: static;
width: auto;
}
/*
* Hide visually and from screenreaders, but maintain layout
*/
.invisible {
visibility: hidden;
}
/*
* Clearfix: contain floats
*
* For modern browsers
* 1. The space content is one way to avoid an Opera bug when the
* `contenteditable` attribute is included anywhere else in the document.
* Otherwise it causes space to appear at the top and bottom of elements
* that receive the `clearfix` class.
* 2. The use of `table` rather than `block` is only necessary if using
* `:before` to contain the top-margins of child elements.
*/
.clearfix:before,
.clearfix:after {
content: " "; /* 1 */
display: table; /* 2 */
}
.clearfix:after {
clear: both;
}
/*
* For IE 6/7 only
* Include this rule to trigger hasLayout and contain floats.
*/
.clearfix {
*zoom: 1;
}
/* ==========================================================================
EXAMPLE Media Queries for Responsive Design.
These examples override the primary ('mobile first') styles.
Modify as content requires.
========================================================================== */
@media only screen and (min-width: 35em) {
/* Style adjustments for viewports that meet the condition */
}
@media print,
(-o-min-device-pixel-ratio: 5/4),
(-webkit-min-device-pixel-ratio: 1.25),
(min-resolution: 120dpi) {
/* Style adjustments for high resolution devices */
}
/* ==========================================================================
Print styles.
Inlined to avoid required HTTP connection: h5bp.com/r
========================================================================== */
@media print {
* {
background: transparent !important;
color: #000 !important; /* Black prints faster: h5bp.com/s */
box-shadow: none !important;
text-shadow: none !important;
}
a,
a:visited {
text-decoration: underline;
}
a[href]:after {
content: " (" attr(href) ")";
}
abbr[title]:after {
content: " (" attr(title) ")";
}
/*
* Don't show links for images, or javascript/internal links
*/
.ir a:after,
a[href^="javascript:"]:after,
a[href^="#"]:after {
content: "";
}
pre,
blockquote {
border: 1px solid #999;
page-break-inside: avoid;
}
thead {
display: table-header-group; /* h5bp.com/t */
}
tr,
img {
page-break-inside: avoid;
}
img {
max-width: 100% !important;
}
@page {
margin: 0.5cm;
}
p,
h2,
h3 {
orphans: 3;
widows: 3;
}
h2,
h3 {
page-break-after: avoid;
}
}
HTML：
<!DOCTYPE html>
<!--[if lt IE 7]> <html class="no-js lt-ie9 lt-ie8 lt-ie7"> <![endif]-->
<!--[if IE 7]> <html class="no-js lt-ie9 lt-ie8"> <![endif]-->
<!--[if IE 8]> <html class="no-js lt-ie9"> <![endif]-->
<!--[if gt IE 8]><!--> <html class="no-js"> <!--<![endif]-->
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title></title>
<meta name="description" content="">
<meta name="viewport" content="width=device-width">
<!-- Place favicon.ico and apple-touch-icon.png in the root directory -->
<link rel="stylesheet" href="css/normalize.css">
<link rel="stylesheet" href="css/main.css">
<script src="js/vendor/modernizr-2.6.2.min.js"></script>
</head>
<body>
<!--[if lt IE 7]>
<p class="chromeframe">You are using an <strong>outdated</strong> browser. Please <a href="http://browsehappy.com/">upgrade your browser</a> or <a href="http://www.google.com/chromeframe/?redirect=true">activate Google Chrome Frame</a> to improve your experience.</p>
<![endif]-->
<!-- Add your site or application content here -->
<header>
<div class="center" id="nav">
<img src="./img/head2.png" id="headb" />
<img src="./img/logo2.png" id="logo" class="logo" />
</div>
<nav>
<div class="center" id="nav">
<ul class="center">
<li><a href="index2.html"><img src="img/homeY2.png" class="navI" /></a></li>
<li><a href="forum.html"><img src="img/forum.png" class="navI" /></a></li>
<li><a href="about2.html"><img src="img/about2.png" class="navI" /></a></li>
<li><a href="media2.html"><img src="img/media2.png" class="navI" /></a></li>
<li><a href="port2.html"><img src="img/port2.png" class="navI" /></a></li>
<li><a href="store2.html"><img src="img/store2.png" class="navI" /></a></li>
<li><a href="contact2.html"><img src="img/contact2.png" class="navI" /></a></li>
<li><a href="home2.html"><img src="img/more.png" class="navI" /></a></li>
</ul>
</div>
</nav>
</header>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script>window.jQuery || document.write('<script src="js/vendor/jquery-1.9.1.min.js"><\/script>')</script>
<script src="js/plugins.js"></script>
<script src="js/main.js"></script>
<!-- Google Analytics: change UA-XXXXX-X to be your site's ID. -->
<script>
var _gaq=[['_setAccount','UA-XXXXX-X'],['_trackPageview']];
(function(d,t){var g=d.createElement(t),s=d.getElementsByTagName(t)[0];
g.src='//www.google-analytics.com/ga.js';
s.parentNode.insertBefore(g,s)}(document,'script'));
</script>
</body>
</html>