使 Bootstrap 的半滑块轮播图像响应答案

【问题标题】：Making Bootstrap's half slider carousel image responsive使 Bootstrap 的半滑块轮播图像响应
【发布时间】：2017-03-31 14:17:15
【问题描述】：

我想采用 bootstrap 中的半页背景滑块模板（下面链接中的 codepen），但是在桌面上调整页面大小时遇到了困难，因为背景图像没有相应地调整大小。非常感谢对 half-slider.css 中的高度和重量设置的解释。

http://codepen.io/kli96/pen/eBBmKB

当前的实现在移动和平板设备上用横向视图挡住了照片的顶部，这就是我尝试在调整页面其余部分大小时调整半滑块照片大小的原因。

<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">
<meta name="description" content="">
<meta name="author" content="">

<title>Half Slider - Start Bootstrap Template</title>


</head>

<body>

<!-- Navigation -->
<nav class="navbar navbar-inverse navbar-fixed-top" role="navigation">
    <div class="container">
        <!-- Brand and toggle get grouped for better mobile display -->
        <div class="navbar-header">
            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
                <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="#">Start Bootstrap</a>
        </div>
        <!-- Collect the nav links, forms, and other content for toggling -->
        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
            <ul class="nav navbar-nav">
                <li>
                    <a href="#">About</a>
                </li>
                <li>
                    <a href="#">Services</a>
                </li>
                <li>
                    <a href="#">Contact</a>
                </li>
            </ul>
        </div>
        <!-- /.navbar-collapse -->
    </div>
    <!-- /.container -->
</nav>

<!-- Half Page Image Background Carousel Header -->
<header id="myCarousel" class="carousel slide">
    <!-- Indicators -->
    <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>

    <!-- Wrapper for Slides -->
    <div class="carousel-inner">
        <div class="item active">
            <!-- Set the first background image using inline CSS below. -->
            <div class="fill" style="background-image:url('http://placehold.it/1900x1080&text=Slide One');"></div>
            <div class="carousel-caption">
                <h2>Caption 1</h2>
            </div>
        </div>
        <div class="item">
            <!-- Set the second background image using inline CSS below. -->
            <div class="fill" style="background-image:url('http://placehold.it/1900x1080&text=Slide Two');"></div>
            <div class="carousel-caption">
                <h2>Caption 2</h2>
            </div>
        </div>
        <div class="item">
            <!-- Set the third background image using inline CSS below. -->
            <div class="fill" style="background-image:url('http://placehold.it/1900x1080&text=Slide Three');"></div>
            <div class="carousel-caption">
                <h2>Caption 3</h2>
            </div>
        </div>
    </div>

    <!-- Controls -->
    <a class="left carousel-control" href="#myCarousel" data-slide="prev">
        <span class="icon-prev"></span>
    </a>
    <a class="right carousel-control" href="#myCarousel" data-slide="next">
        <span class="icon-next"></span>
    </a>

</header>

<!-- Page Content -->
<div class="container">

    <div class="row">
        <div class="col-lg-12">
            <h1>Half Slider by Start Bootstrap</h1>
            <p>The background images for the slider are set directly in the HTML using inline CSS. The rest of the styles for this template are contained within the <code>half-slider.css</code>file.</p>
        </div>
    </div>

    <hr>

    <!-- Footer -->
    <footer>
        <div class="row">
            <div class="col-lg-12">
                <p>Copyright &copy; Your Website 2014</p>
            </div>
        </div>
        <!-- /.row -->
    </footer>

</div>
<!-- /.container -->

<!-- jQuery -->
<script src="js/jquery.js"></script>

<!-- Bootstrap Core JavaScript -->
<script src="js/bootstrap.min.js"></script>

<!-- Script to Activate the Carousel -->
<script>
$('.carousel').carousel({
    interval: 5000 //changes the speed
})
</script>

以及对应的css：

html,
body {
    height: 100%;
}

.carousel {
    height: 50%;
}

.item,
.active,
.carousel-inner {
    height: 100%;
}

.fill {
    width: 100%;
    height: 100%;
    background-position: center;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    background-size: cover;
    -o-background-size: cover;
}

footer {
    margin: 50px 0;
}

【问题讨论】：

在flunker或codepen中分享您的代码，以便我们查看您的试用预览。那么我们可以提出更好的建议。
抱歉，之前发错链接了——刚刚把代码加进去了

标签： html css twitter-bootstrap-3 carousel

【解决方案1】：

好的，你可能有两种方法解决这个问题：

1) 制作你的导航栏固定顶级类position: relative

或

2) 为你的轮播类添加边距margin-top: 1%;

【讨论】：

谢谢！相对位置成功了。我不得不向上移动轮播以进行补偿，但在横向移动视图上它现在看起来很完美。