Question

我一直在尝试使我的导航栏品牌徽标和旋转木马都具有响应能力，但似乎没有任何效果。如果我减小屏幕尺寸，品牌形象就会在导航栏上溢出，而轮播会显得拉长且笨拙。我的代码在下面。

CAROUSEL HTML

    <div class="row">
<div class="col-sm-12 col-md-12 col-lg-12">
<div class = "carousel">
<div id="carouselExampleIndicators" class="carousel slide" data-ride="carousel">
  <ol class="carousel-indicators">
    <li data-target="#carouselExampleIndicators" data-slide-to="0" class="active"></li>
    <li data-target="#carouselExampleIndicators" data-slide-to="1"></li>
     </ol>
  <div class="carousel-inner">
    <div class="carousel-item active">
      <img src="#" class="d-block w-100" alt="...">
    <div class="carousel-caption d-none d-md-block">
      <h3></h3>
    </div>
    </div>
    <div class="carousel-item">
      <img src="#" class="d-block w-100" alt="...">
     <div class="carousel-caption d-none d-md-block">
    <h3></h3>
  </div>
    </div>

NAVBAR HTML

<nav class="navbar navbar-custom navbar-expand-lg fixed-top">
<a class="navbar-brand" href="#">
    <img class="img-responsive" src="" width="30" height="50" alt="">
  </a>
...
</nav>

Answer 1

我通过添加图像测试了您的代码，看起来一切都已正确配置。但是，您可能想看看如何配置CSS。

尝试添加（最新的最小CSS）：

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.3/css/bootstrap.min.css" />

此外，您可能会混合使用不同的Bootstrap 4和3元素（我看到您使用img-responsive作为徽标-在Bootstrap 4中不再使用，现在是img-fluid）。如果是这种情况，请尝试以下导航栏：

<nav class="navbar navbar-expand-lg navbar-light bg-light">
  <a class="navbar-brand" href="#"><img src="https://via.placeholder.com/50" class="d-block w-100" alt="..."></a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>

  <div class="collapse navbar-collapse" id="navbarSupportedContent">
    <ul class="navbar-nav mr-auto">
      <li class="nav-item active">
        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Link</a>
      </li>
      <li class="nav-item dropdown">
        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
          Dropdown
        </a>
        <div class="dropdown-menu" aria-labelledby="navbarDropdown">
          <a class="dropdown-item" href="#">Action</a>
          <a class="dropdown-item" href="#">Another action</a>
          <div class="dropdown-divider"></div>
          <a class="dropdown-item" href="#">Something else here</a>
        </div>
      </li>
      <li class="nav-item">
        <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
      </li>
    </ul>
  </div>
</nav>

Codepen：https://codepen.io/brooksrelyt/pen/drPpeW

Answer 2

对于导航栏，

在导航中添加navbar-dark bg-dark导航栏类。

<nav class="navbar  navbar-expand-lg fixed-top navbar-dark bg-dark navbar">
 <a class="navbar-brand" href="#">
     <button class="navbar-toggler" type="button" data-toggle="collapse" data-target=".navbar-collapse" aria-controls="nav-content" aria-expanded="true" aria-label="Toggle-navigation">
        <img class="img-responsive" src="Images/img1.png" width="30" height="50" alt="">
     </button>
 </a>
</nav>

Answer 3

对于轮播，

通过在引导程序4中添加img-fluid类或在引导程序3中添加img响应类，使图像具有响应性

 <div class="col-12">

               <div id="imageCarousel" class="carousel slide" data-interval="2000">

               <ul class="carousel-indicators">

                <li data-target="#imageCarousel" data-slide-to="0" class="active"></li>
                <li data-target="#imageCarousel" data-slide-to="1"></li>
                <li data-target="#imageCarousel" data-slide-to="2"></li>
                <li data-target="#imageCarousel" data-slide-to="3"></li>

               </ul>
               <a href="#imageCarousel" class="carousel-control-prev" data-slide="prev"><span class="carousel-control-prev-icon"></span></a>
                <div class="carousel-inner" style="background-color:Gray">

                      <div class="carousel-item active" >
                        <img src="Images/jellyfish.jpg" class="img-fluid mx-auto d-block" width="75%" />
                        <div class="carousel-caption">
                            <h3>JellyFish</h3>
                            <p>JellyFish Image Description</p>
                        </div>
                    </div>

                     <div class="carousel-item">
                        <img src="Images/Desert.jpeg" class="img-fluid mx-auto d-block" width="75%" />
                        <div class="carousel-caption">
                            <h3>desert</h3>
                            <p>Beutiful desert</p>
                        </div>
                    </div>

                      <div class="carousel-item">
                        <img src="Images/lighthouse.jpeg" class="img-fluid mx-auto d-block" width="75%" />
                        <div class="carousel-caption">
                           <h3>Lighthouse</h3>
                            <p>Lighthouse Image Description</p>
                        </div>
                    </div>

                      <div class="carousel-item">
                        <img src="Images/Penguin.jpg" class="img-fluid d-block" width="75%" />
                        <div class="carousel-caption">
                           <h3>Penguin</h3>
                            <p>Penguin Image Description</p>
                        </div>
                    </div>
                </div>

                <a href="#imageCarousel" class="carousel-control-next" data-slide="next"><span class="carousel-control-next-icon"></span></a>
               </div>


            </div>

Bootstrap Navbar和Carousel无响应

3 个答案: