移动大小的bootstrap轮播

Question

我试图在这个页面上添加一个轮播，所以当在移动设备上查看旋转木马进行调整时，目前它会缩小到大小并且无法查看（对不起它可能很简单，但这是我的第一个带引导程序的牛仔竞技表演！）

HTML：

 <!-- Carousel
================================================== -->
<div id="myCarousel" class="carousel slide" data-ride="carousel">
  <!-- 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>
  <div class="carousel-inner" role="listbox">
    <div class="item active">
      <img class="first-slide" src="imgs/facebook%20page.jpg" alt="First slide">
      <div class="container">
        <!--<div class="carousel-caption">
          <h1>Example headline.</h1>
          <p>Note: If you're viewing this page via a <code>file://</code> URL, the "next" and "previous" Glyphicon buttons on the left and right might not load/display properly due to web browser security rules.</p>
          <p><a class="btn btn-lg btn-primary" href="#" role="button">Sign up today</a></p>
        </div>-->
      </div>
    </div>
    <div class="item">
      <img class="second-slide" src="data:image/gif;base64,R0lGODlhAQABAIAAAHd3dwAAACH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==" alt="Second slide">
      <div class="container">
        <div class="carousel-caption">
          <h1>Another example headline.</h1>
          <p>Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
          <p><a class="btn btn-lg btn-primary" href="#" role="button">Learn more</a></p>
        </div>
      </div>
    </div>
    <div class="item">
      <img class="third-slide" src="data:image/gif;base64,R0lGODlhAQABAIAAAHd3dwAAACH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==" alt="Third slide">
      <div class="container">
        <div class="carousel-caption">
          <h1>One more for good measure.</h1>
          <p>Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
          <p><a class="btn btn-lg btn-primary" href="#" role="button">Browse gallery</a></p>
        </div>
      </div>
    </div>
  </div>
  <a class="left carousel-control" href="#myCarousel" role="button" data-slide="prev">
    <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
    <span class="sr-only">Previous</span>
  </a>
  <a class="right carousel-control" href="#myCarousel" role="button" data-slide="next">
    <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
    <span class="sr-only">Next</span>
  </a>
</div><!-- /.carousel -->


/* CUSTOMIZE THE NAVBAR

----------------------------------------------- --- * /

   /* Special class on .container surrounding .navbar, used for positioning it into place. */
    .navbar-wrapper {
      position: absolute;
      top: 0;
      right: 0;
      left: 0;
  z-index: 20;
}

    /* Flip around the padding for proper display in narrow viewports */
    .navbar-wrapper > .container {
      padding-right: 0;
      padding-left: 0;
    }
    .navbar-wrapper .navbar {
     padding-right: 15px;
  padding-left: 15px;
}
.navbar-wrapper .navbar .container {
  width: auto;
}


/* CUSTOMIZE THE CAROUSEL
-------------------------------------------------- */

/* Carousel base class */
.carousel {
  height: 500px;
  margin-bottom: 60px;
}
/* Since positioning the image, we need to help out the caption */
.carousel-caption {
  z-index: 10;
}

/* Declare heights because of positioning of img element */
.carousel .item {
  height: 500px;
  background-color: #777;
}
.carousel-inner > .item > img {
  position: absolute;
  top: 0;
  left: 0;
  min-width: 100%;
  height: 500px;
}

我可能用太多的代码轰炸了这个问题......这样的菜鸟！

提前致谢

Answer 1

所以我喜欢用自举式旋转木马给物品类提供一个百分比的底部而不是给出一个高度然后用这个百分比玩，直到你得到所需的高度。这将使他们响应并调整屏幕大小。然后，不是将图像放在旋转木马内，而是为每个旋转木马项目提供另一个类，如第一项，第二项，第三项等。然后在你的CSS中给这个类一个背景图像。您可以为项目类background-size:cover;和background position: center;。然后我不是在你的旋转木马上有一个h1标签，我只想放一个p标签并给它一个旋转木马标题，然后在你的另一个标签中给它一类旋转木马描述。我不喜欢在旋转木马上放置h1标签的原因是因为页面上应该只有一个h1标签，你可以稍后指定，但如果你想在旋转木马中使用h1标签，只需给它一类旋转木马标题。您可以在CSS中的samller屏幕上调整这些元素中的文本大小。所以希望所有这些都是有道理的。

查看此JSFiddle并拖动显示窗口，以便您可以看到它调整大小 - JSFiddle

然后这是你的html和css：

你的Css：

#myCarousel .item{
  padding-bottom: 50%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  min-height: 250px;
}
#myCarousel .first-item{
  background-image: url('http://placehold.it/500x500');
}
#myCarousel .second-item{
  background-image: url('http://placehold.it/500x500');
}
#myCarousel .third-item{
  background-image: url('http://placehold.it/500x500');
}
#myCarousel .carousel-heading{font-size: 40px;}
@media screen and (max-width: 767px){
    #myCarousel .carousel-heading{font-size: 18px;}
    #myCarousel .carousel-description{font-size: 12px;}
    #myCarousel .btn-primary{font-size: 14px;}
}

和你的Html：

<div id="myCarousel" class="carousel slide" data-ride="carousel">
  <!-- 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>
  <div class="carousel-inner" role="listbox">
    <div class="item active first-item">
      <div class="container">
        <div class="carousel-caption">
          <p class="carousel-heading">Example Heading</p>
          <p class="carousel-description">Note: If you're viewing this page via a <code>file://</code> URL, the "next" and "previous" Glyphicon buttons on the left and right might not load/display properly due to web browser security rules.</p>
          <p><a class="btn btn-lg btn-primary" href="#" role="button">Sign up today</a></p>
        </div>
      </div>
    </div>
    <div class="item second-item">
      <div class="container">
        <div class="carousel-caption">
          <p class="carousel-heading">Example Heading</p>
          <p class="carousel-description">Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
          <p><a class="btn btn-lg btn-primary" href="#" role="button">Learn more</a></p>
        </div>
      </div>
    </div>
    <div class="item third-item">
      <div class="container">
        <div class="carousel-caption">
          <p class="carousel-heading">Example Heading</p>
          <p class="carousel-description">Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
          <p><a class="btn btn-lg btn-primary" href="#" role="button">Browse gallery</a></p>
        </div>
      </div>
    </div>
  </div>
  <a class="left carousel-control" href="#myCarousel" role="button" data-slide="prev">
    <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
    <span class="sr-only">Previous</span>
  </a>
  <a class="right carousel-control" href="#myCarousel" role="button" data-slide="next">
    <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
    <span class="sr-only">Next</span>
  </a>
</div><!-- /.carousel -->