我正在尝试在Bootstrap网站的主页上制作旋转木马。我希望它位于页面的中心（垂直和水平），并且负责，因此无论用户使用什么尺寸的屏幕，它始终保持在页面的中心。我可以使它水平居中，但不垂直。除了全屏背景图像之外，旋转木马是主页上唯一的东西。这是迄今为止的相关代码。
<!DOCTYPE html>
<html lang="en">
<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>Esther Arts</title>
<!-- Bootstrap -->
<link href="css/bootstrap.min.css" rel="stylesheet">
<script src="/js/jquery-2.1.1.min.js"></script>
<script src="/js/bootstrap.min.js"></script>
<!-- customized CSS -->
<link href="css/styles.css" rel="stylesheet">
<!-- Font Awesome -->
<link rel="stylesheet" href="font_awesome_4.2.0/css/font-awesome.min.css">
<!-- HTML5 Shim and Respond.js 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/libs/html5shiv/3.7.0/html5shiv.js"></script>
<script src="https://oss.maxcdn.com/libs/respond.js/1.4.2/respond.min.js"></script>
<![endif]-->
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js" type="text/javascript" ></script>
<script type="text/javascript">
$(function() {
var images = ['bg1.jpg', 'bg2.jpg', 'bg3.jpg', 'bg4.jpg', 'bg5.jpg', 'bg6.jpg'];
$('#homepage').css(
{'background-image': 'url(img/' + images[Math.floor(Math.random() * images.length)] + ')'}
);
});
</script>
<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet">
<link href="//netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.min.css" rel="stylesheet">
</head>
<body id="homepage">
<!-- website title, navigation bar -->
<div class="navbar navbar-default navbar-static-top">
<div class="container">
<!-- website title -->
<a class="navbar-brand" href="http://www.estherarts.com">Esther Arts</a>
<!-- button group -->
<button class="navbar-toggle" data-toggle="collapse" data-target=".navHeaderCollapse">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<div class="collapse navbar-collapse navHeaderCollapse">
<ul class="nav navbar-nav navbar-right">
<li class="active"><a href="#">Home</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Arts</a>
<ul class="dropdown-menu">
<li><a href="#">Twitter</a></li>
<li><a href="#">FB</a></li>
<li><a href="#">Google Plus</a></li>
</ul>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Calendar</a>
<ul class="dropdown-menu">
<li><a href="#">Twitter</a></li>
<li><a href="#">FB</a></li>
<li><a href="#">Google Plus</a></li>
</ul>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">News</a>
<ul class="dropdown-menu">
<li><a href="#">Twitter</a></li>
<li><a href="#">FB</a></li>
<li><a href="#">Google Plus</a></li>
</ul>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Invest</a>
<ul class="dropdown-menu">
<li><a href="#">Twitter</a></li>
<li><a href="#">FB</a></li>
<li><a href="#">Google Plus</a></li>
</ul>
</li>
<li>
<a href="contact.php">Contact</a>
</li>
</ul>
</div>
</div>
</div>
<div class="high_container">
<div class="container" id="carousel_container">
<div class="row">
<div class="well">
<!-- Carousel
================================================== -->
<div id="myCarousel" class="carousel slide">
<div class="carousel-inner">
<div class="item active">
<div class="row">
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb11" />
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb12" />
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb13" />
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb14">
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb14">
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb14">
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb14">
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb14">
</a>
</div>
</div>
</div>
<div class="item">
<div class="row">
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb21" />
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb22" />
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb23" />
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb24" />
</a>
</div>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb14">
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb14">
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb14">
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb14">
</a>
</div>
</div>
<div class="item">
<div class="row">
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb31" />
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb32" />
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb33" />
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb34" />
</a>
</div>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb14">
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb14">
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb14">
</a>
</div>
<div class="col-md-3">
<a href="#" class="thumbnail">
<img class="img-responsive" src="http://placehold.it/250x160" alt="Thumb14">
</a>
</div>
</div>
</div>
<a class="left carousel-control" href="#myCarousel" data-slide="prev"><i class="fa fa-chevron-left fa-2x"></i></a>
<a class="right carousel-control" href="#myCarousel" data-slide="next"><i class="fa fa-chevron-right fa-2x"></i></a>
<ol class="carousel-indicators">
<li data-target="#myCarousel" data-slide-to="0" class="active"></li>
<li data-target="#myCarousel" data-slide-to="1"></li>
<li data-target="#myCarousel" data-slide-to="2"></li>
</ol>
</div><!-- End Carousel -->
</div><!-- End Well -->
</div>
</div>
</div>
<!-- sticky footer -->
<div class="navbar navbar-default navbar-fixed-bottom">
<div class="container" align="right">
<a class="navbar-text">® 2014 estherarts.com</a>
<li class="btn-group dropup pull-right" align="right">
<button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
Language <span class="caret"></span>
</button>
<ul class="dropdown-menu" role="menu">
<li><a href="#">English</a></li>
<li><a href="#">Chinese (Simplified)</a></li>
<li><a href="#">Chinese (Traditional)</a></li>
<li><a href="#">Ukrainian</a></li>
</ul>
</li>
<a class="btn btn-social-icon btn-twitter btn-lg pull-right" align="right">
<i class="fa fa-twitter"></i>
</a>
<a class="btn btn-social-icon btn-facebook btn-lg pull-right" align="right">
<i class="fa fa-facebook"></i>
</a>
</div>
</div>
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="js/bootstrap.min.js"></script>
</body>
</html>
CSS部分，
.page-header {
margin-top: 0;
}
.panel-body {
padding-top: 0;
}
#homepage {
/* background: url(../img/bg1.jpg) no-repeat center center fixed; */
-webkit-background-size: cover;
-moz-background-size: cover;
background-size: cover;
-o-background-size: cover;
height: 100%;
margin: 0px;
border-style:solid;
}
.high_container {
position:relative;
}
.container {
clear:both;
position: relative;
margin: 0 auto;
text-align: left;
vertical-align: middle;
}
#carousel_container {
clear:both;
position: relative;
margin: 0 auto;
text-align: left;
vertical-align: middle;
}
.vertical-center {
height:100%;
width:100%;
text-align: center; /* align the inline(-block) elements horizontally */
font: 0/0 a; /* remove the gap between inline(-block) elements */
}
.vertical-center:before { /* create a full-height inline block pseudo=element */
content: ' ';
display: inline-block;
vertical-align: middle; /* vertical alignment of the inline element */
height: 100%;
}
.vertical-center > .container {
max-width: 100%;
background-color: gold;
display: inline-block;
vertical-align: middle; /* vertical alignment of the inline element */
/* reset the font property */
font: 16px/1 "Helvetica Neue", Helvetica, Arial, sans-serif;
}
#contact_form {
float: none;
margin-left: auto;
margin-right: auto;
}
#myCarousel {
display: -webkit-box;
display: -moz-box;
display: -ms-flexbox;
display: -moz-flex;
display: -webkit-flex;
display: flex;
-webkit-flex-flow: row wrap;
flex-flow: row wrap;
-webkit-align-content: center;
align-content: center;
}
#myCarousel .thumbnail {
margin-bottom: 0;
}
.carousel-control.left, .carousel-control.right {
background-image:none !important;
}
.carousel-control {
color:#fff;
top:40%;
color:#428BCA;
bottom:auto;
padding-top:4px;
width:30px;
height:30px;
text-shadow:none;
opacity:1;
}
.carousel-control:hover {
color: #d9534f;
}
.carousel-control.left, .carousel-control.right {
background-image:none !important;
}
.carousel-control.right {
left:auto;
right:-32px;
}
.carousel-control.left {
right:auto;
left:-32px;
}
.carousel-indicators {
bottom:-30px;
}
.carousel-indicators li {
border-radius:0;
width:10px;
height:10px;
background:#ccc;
border:1px solid #ccc;
}
.carousel-indicators .active {
width:12px;
height:12px;
background:#3276b1;
border-color:#3276b1;
}
http://imgur.com/5fOvB8J 这是截图。下面的图像是我主页的全屏背景图像。
当我创建边框以查看 body 元素所在的位置时，我在下面有这个图片， http://imgur.com/kuUyW74
我不明白为什么 body 元素不包含页脚，这与我在代码中定义的方式不同。
答案 0 :(得分：2)
尝试以下代码。希望它会对你有所帮助。只需根据您的要求设置height，margin和position即可。
container{
height: 87%;
margin-top: -10%;
position: fixed;
top: 50%;
}
答案 1 :(得分：0)
如果div.container的高度是其父级/顶级div的50％，则将其位置设为绝对值并设置
.parent-of-container{
position:relative;
}
.container{
position:absolute;
top:25%;
....
}