Question

我正在为项目使用引导程序4。切换导航栏时，它与它后面的内容重叠，如何使其余内容向下移动以适应下拉菜单？

我为自己的身体增加了50px的空白。

我不知道为什么片段显示的标题有点透明。该网站在我的浏览器中的外观如下：

.row-header {
  margin: 0px auto;
  padding: 0px;
}
body {
  padding: 50px 0px 0px 0px;
  z-index: 0;
}
.navbar-dark {
  background-color: #512da8;
}
.navbar-brand {
  padding-right: 20px;
}
.row-content {
  margin: 0px auto;
  padding: 50px 0px 50px 0px;
  border-bottom: 1px ridge;
  min-height: 400px;
}

.footer {
  background-color: #d1c4e9;
  margin: 0px auto;
  padding: 20px 0px 20px 0px;
}
.jumbotron {
  padding: 70px 30px 70px 30px;
  margin: 0px auto;
  background: #9575cd;
  color: floralwhite;
}

address {
  font-size: 80%;
  margin: 0px;
  color: #0f0f0f;
}

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <meta http-equiv="x-ua-compatible" content="ie=edge">


    <link rel="stylesheet"
        href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.5.0/css/bootstrap.min.css" />
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" />
    <link rel="stylesheet"
        href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-social/5.1.1/bootstrap-social.min.css">
    <link rel="stylesheet" href="css/styles.css" />
    <title>Ristorante Con Fusion</title>
</head>

<body>
    <nav class="navbar navbar-expand-sm navbar-dark fixed-top">
        <div class="container">
            <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#Navbar">
                <span class="navbar-toggler-icon"></span>
            </button>
            <a href="#" class="navbar-brand mr-auto">Ristorante Con Fusion</a>
            <div class="collapse navbar-collapse" id="Navbar">
                <ul class="navbar-nav mr-auto">
                    <li class="nav-item active">
                        <a href="#" class="nav-link"><span class="fa fa-home fa-lg"></span> Home</a>
                    </li>
                    <li class="nav-item">
                        <a href="./aboutUs.html" class="nav-link"><span class="fa fa-info fa-lg"></span> About</a>
                    </li>
                    <li class="nav-item">
                        <a href="#" class="nav-link"><span class="fa fa-list fa-lg"></span> Menu</a>
                    </li>
                    <li class="nav-item">
                        <a href="./contactus.html" class="nav-link"><span class="fa fa-address-card fa-lg"></span>
                            Contact</a>
                    </li>
                </ul>
            </div>
        </div>
    </nav>
    <header class="jumbotron">
        <div class="container">
            <div class="row row-header">
                <div class="col-12 col-sm-6">
                    <h1>Ristorante con Fusion</h1>
                    <p>We take inspiration from the World's best cuisines, and create a unique fusion experience. Our
                        lipsmacking creations will tickle your culinary senses!</p>
                </div>
                <div class="col-12 col-sm">
                </div>
            </div>
        </div>
    </header>

    <div class="container">
        <div class="row row-content align-items-center">
            <div class="col-12 col-sm-4 col-md-3">
                <h3>Our Lipsmacking Culinary Creations</h3>
            </div>
            <div class="col-12 col-sm col-md">
                <h2>Uthappizza</h2>
                <p>A unique combination of Indian Uthappam (pancake) and Italian pizza, topped with Cerignola olives,
                    ripe vine cherry tomatoes, Vidalia onion, Guntur chillies and Buffalo Paneer.</p>
            </div>
        </div>


        <div class="row row-content align-items-center">
            <div class="col-12 col-sm-4 col-md-3">
                <h3>This Month's Promotions</h3>
            </div>
            <div class="col-12 col-sm col-md">
                <h2>Weekend Grand Buffet</h2>
                <p>Featuring mouthwatering combinations with a choice of five different salads, six enticing appetizers,
                    six main entrees and five choicest desserts. Free flowing bubbly and soft drinks. All for just
                    $19.99 per person </p>
            </div>
        </div>

        <div class="row row-content align-items-center">
            <div class="col-12 col-sm-4 col-md-3">
                <h3>Meet our Culinary Specialists</h3>
            </div>
            <div class="col-12 col-sm col-md">
                <h2>Alberto Somayya</h2>
                <h4>Executive Chef</h4>
                <p>Award winning three-star Michelin chef with wide International experience having worked closely with
                    whos-who in the culinary world, he specializes in creating mouthwatering Indo-Italian fusion
                    experiences. </p>
            </div>
        </div>
    </div>

    <footer class="footer">
        <div class="container">
            <div class="row">
                <div class="col-4 offset-1 col-sm-2">
                    <h5>Links</h5>
                    <ul class="list-unstyled">
                        <li><a href="#">Home</a></li>
                        <li><a href="./aboutUs.html">About</a></li>
                        <li><a href="#">Menu</a></li>
                        <li><a href="./contactus.html">Contact</a></li>
                    </ul>
                </div>
                <div class="col-7 col-sm-5">
                    <h5>Our Address</h5>
                    <address>
                        121, Clear Water Bay Road<br>
                        Clear Water Bay, Kowloon<br>
                        HONG KONG<br>
                        <i class="fa fa-phone fa-lg"></i>: +852 1234 5678<br>
                        <i class="fa fa-fax fa-lg"></i>: +852 8765 4321<br>
                        <i class="fa fa-envelope fa-lg"></i>: <a href="mailto:confusion@food.net">confusion@food.net</a>
                    </address>
                </div>
                <div class="col-12 col-sm-4 align-self-center">
                    <div class="text-center">
                        <a href="http://google.com/+" class="btn btn-social-icon btn-google"><i
                                class="fa fa-google-plus fa-lg"></i></a>
                        <a href="http://www.facebook.com/profile.php?id=" class="btn btn-social-icon btn-facebook"><i
                                class="fa fa-facebook fa-lg"></i></a>
                        <a href="http://www.linkedin.com/in/" class="btn btn-social-icon btn-linkedin"><i
                                class="fa fa-linkedin fa-lg"></i></a>
                        <a href="http://twitter.com/" class="btn btn-social-icon btn-twitter"><i
                                class="fa fa-twitter fa-lg"></i></a>
                        <a href="http://youtube.com/" class="btn btn-social-icon btn-google"><i
                                class="fa fa-youtube fa-lg"></i></a>
                        <a href="mailto:" class="btn btn-social-icon"><i class="fa fa-envelope fa-lg"></i></a>
                    </div>
                </div>
            </div>
            <div class="row justify-content-center">
                <div class="col-auto">
                    <p>© Copyright 2018 Ristorante Con Fusion</p>
                </div>
            </div>
        </div>
    </footer>

    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.slim.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.1/umd/popper.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.5.0/js/bootstrap.min.js"></script>

</body>

</html>

Answer 1

由于导航栏的位置是固定的并且与它下方的内容无关地对齐，因此导航栏在切换后会与它下面的内容重叠，因此，要使其在切换时将其推入下方，您需要使其相对较小使用媒体查询的屏幕设备，例如

@media (max-width:480px){

    body{
        padding:0;
    }
    .fixed-top{
         position:relative;
    }

}

我制作了0正文填充，以确保在制作导航栏relative后不会在顶部显示空白

但是请注意，这将使您的导航栏在向下滚动页面时向上移动并远离视口。

如何防止Navbar下拉菜单与其余内容重叠？

1 个答案: