这可能是一个非常基本的问题，但我无法解决这个问题： 添加Max-Width媒体查询后，我尝试在一定宽度（714px）的窗口时禁用正文背景图像，但它没有工作。但是，所有其他CSS命令在身体上工作正常，除了禁用背景图像并且只有颜色，这里是下面的代码，任何人都可以帮忙吗？
body {
background-color: #737373;
background-image: url(../Images/bkgd.jpg);
background-size: cover;
color: #3A3A3A;
text-align: left;
font-family: advent-pro;
font-style: normal;
margin: 0px;
font-weight: 400;
font-size: 1.8em;
}
.NavListItem {
float: left;
}
.NavListItem a {
margin: 0px;
text-decoration: none;
display: block;
padding-left: 20px;
color: #232323;
font-size: 1.2em;
padding-top: 20px;
padding-bottom: 20px;
padding-right: 20px;
}
.NavListItem a:hover {
color: black;
background-color: aquamarine;
}
section {
background-image: -webkit-linear-gradient(270deg,rgba(255,255,255,1.00) 0%,rgba(255,255,255,0.92) 49.74%,rgba(255,255,255,0.25) 100%);
background-image: -moz-linear-gradient(270deg,rgba(255,255,255,1.00) 0%,rgba(255,255,255,0.92) 49.74%,rgba(255,255,255,0.25) 100%);
background-image: -o-linear-gradient(270deg,rgba(255,255,255,1.00) 0%,rgba(255,255,255,0.92) 49.74%,rgba(255,255,255,0.25) 100%);
background-image: linear-gradient(180deg,rgba(255,255,255,1.00) 0%,rgba(255,255,255,0.92) 49.74%,rgba(255,255,255,0.25) 100%);
font-size: 1.5em;
}
.NavBar {
padding: 0px;
margin: 0px;
list-style-type: none;
overflow: hidden;
}
nav {
background-image: -webkit-linear-gradient(270deg,rgba(255,255,255,1.00) 0%,rgba(201,201,201,1.00) 100%);
background-image: -moz-linear-gradient(270deg,rgba(255,255,255,1.00) 0%,rgba(201,201,201,1.00) 100%);
background-image: -o-linear-gradient(270deg,rgba(255,255,255,1.00) 0%,rgba(201,201,201,1.00) 100%);
background-image: linear-gradient(180deg,rgba(255,255,255,1.00) 0%,rgba(201,201,201,1.00) 100%);
}
footer {
clear: both;
margin: 0PX;
text-align: center;
position: fixed;
left: 0px;
bottom: 0px;
height: 80px;
width: 100%;
padding-top: 56px;
background-image: -webkit-linear-gradient(270deg,rgba(255,255,255,0.00) 0%,rgba(255,255,255,1.00) 78.24%,rgba(255,255,255,1.00) 100%);
background-image: -moz-linear-gradient(270deg,rgba(255,255,255,0.00) 0%,rgba(255,255,255,1.00) 78.24%,rgba(255,255,255,1.00) 100%);
background-image: -o-linear-gradient(270deg,rgba(255,255,255,0.00) 0%,rgba(255,255,255,1.00) 78.24%,rgba(255,255,255,1.00) 100%);
background-image: linear-gradient(180deg,rgba(255,255,255,0.00) 0%,rgba(255,255,255,1.00) 78.24%,rgba(255,255,255,1.00) 100%);
}
.AsideRight {
width: 55%;
clear: right;
float: right;
border-top-right-radius: 50px;
margin-right: 5%;
margin-left: 1%;
padding-left: 2.5%;
padding-right: 2.5%;
margin-top: 30px;
padding-bottom: 42px;
margin-bottom: 68px;
padding-top: 24px;
}
h1 {
font-size: 3em;
font-family: alfa-slab-one;
font-style: normal;
font-weight: 400;
line-height: 1em;
text-align: center;
color: #EFEFEF;
text-shadow: 2px 2px 10px #353535;
}
h2 {
text-align: center;
font-size: 2.em;
font-family: alfa-slab-one;
font-style: normal;
font-weight: 400;
font-size: 1em;
line-height: 2em;
}
.AsideLeft {
width: 28%;
float: left;
margin-right: 1%;
margin-left: 5%;
padding-bottom: 0px;
}
header {
text-align: center;
margin-top: 20px;
margin-bottom: 30px;
}
.NavList {
padding: 0px;
margin: 0px;
list-style-type: none;
overflow: hidden;
}
.container-fluid .navbar-header .navbar-brand {
font-family: alfa-slab-one;
font-style: normal;
font-weight: 400;
color: #3F3F3F;
}
@media (max-width : 714px ){
.AsideLeft {
width: 90%;
float: none;
margin-right: 5%;
margin-left: 5%;
padding-bottom: 0px;
}
.AsideRight {
width: 90%;
clear: right;
float: none;
border-top-right-radius: 50px;
margin-right: 5%;
margin-left: 5%;
}
h1 {
font-size: 2.2em;
font-family: alfa-slab-one;
font-style: normal;
font-weight: 400;
line-height: 1em;
text-align: center;
color: #EFEFEF;
text-shadow: 2px 2px 10px #353535;
}
body {
background-color: #737373;
/* background-image: url(../Images/bkgd.jpg);
*/ background-size: cover;
color: #3A3A3A;
text-align: left;
font-family: advent-pro;
font-style: normal;
margin: 0px;
font-weight: 400;
font-size: 1.8em;
}
}<!doctype html>
<html><head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Website design</title>
<!-- <link href="css/bootstrap.css" rel="stylesheet" type="text/css"> -->
<link href="css/bootstrap-3.3.7.css" rel="stylesheet" type="text/css">
<link href="Css File/styles.css" rel="stylesheet" type="text/css">
<style type="text/css">
body {
background-image: url(Images/Carousel_4.jpg);
}
</style>
<!--The following script tag downloads a font from the Adobe Edge Web Fonts server for use within the web page. We recommend that you do not modify it.-->
<script>var __adobewebfontsappname__="dreamweaver"</script>
<script src="http://use.edgefonts.net/actor:n4:default;alfa-slab-one:n4:default;aclonica:n4:default;advent-pro:n4:default.js" type="text/javascript"></script>
<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body style="padding-top: 70px">
<nav class="navbar navbar-default navbar-fixed-top">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#topFixedNavbar1" aria-expanded="false"><span class="sr-only">Toggle navigation</span><span class="icon-bar"></span><span class="icon-bar"></span><span class="icon-bar"></span></button>
<a class="navbar-brand" href="#">Mazen | First Website Design</a></div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="topFixedNavbar1">
<ul class="nav navbar-nav">
<li class="active NavListItem"><a href="#">Home<span class="sr-only">(current)</span></a></li>
<li class="NavListItem"><a href="Portfolio.html">Portfolio</a></li>
<li class="NavListItem"><a href="Contact.html">Contact</a></li>
<li class="NavListItem"><a href="About.html">About </a></li>
</ul>
</div>
<!-- /.navbar-collapse -->
</div>
<!-- /.container-fluid -->
</nav>
<header><img src="Images/Logo.png" width="80" height="80" alt=""/></header>
<aside class="AsideLeft">
<h1>What can i create for you</h1>
</aside>
<section class="AsideRight">
<h2> Creating compelling branding </h2>
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</section>
<footer> Copy rights 2017 100% recycled content</footer>
<script src="js/jquery-1.11.3.min.js"></script>
<!-- <script src="js/bootstrap.js"></script> -->
<script src="js/bootstrap-3.3.7.js"></script>
</body>
</html>
答案 0 :(得分：0)
尝试添加background: none
@media all and (max-width: 712px)
{
background: none;
background-color: #737373;
background-size: cover;
color: #3A3A3A;
text-align: left;
font-family: advent-pro;
font-style: normal;
margin: 0px;
font-weight: 400;
font-size: 1.8em;
}