【问题标题】:Elements hide behind .fixed-top navbar - Bootstrap元素隐藏在 .fixed-top navbar 后面 - Bootstrap
【发布时间】:2022-10-12 23:15:53
【问题描述】:

我希望你一切都好,我想问一下我在使用 Bootstrap 时遇到的一些问题,我已经阅读了 Bootstrap 文档,他们声明 .sticky-top 可能不再被某些浏览器支持;因此我决定改用 .fixed-top ,但是,当我使用这个类时,身体的一部分隐藏在导航栏后面,我想知道是否有另一种方法来解决这个问题,或者唯一的方法是让它工作将在 CSS 上添加一个 margin-top,因为 .pt-5 类几乎不显示内容。像往常一样非常感谢您的帮助。

:root {
  --body-font: "Roboto Mono", monospace;
  --main-font: "Caveat", cursive;
  --secondary-font: "Dosis", sans-serif;
  --primary-color: salmon;
  --secondary-color: rgb(71, 66, 65)
  --box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
}

.navbar-brand {
  font-family: var(--main-font);
  font-size: 22px !important;
}

.text-secondary{
  color: rgb(94, 94, 94);

}
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <meta name="description" content="I'm Marizabelle Aldana, 27yo developer based in Guatemala, currently living in London.">

    <title>Marizabelle's website - Homepage</title>

    <link rel="stylesheet" href="src/styles.css" />

    <link rel="preconnect" href="https://fonts.googleapis.com" />
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
    <link rel="preconnect" href="https://fonts.googleapis.com" />
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
    <link
      href="https://fonts.googleapis.com/css2?family=Amatic+SC&family=Anton&family=Caveat:wght@600&family=Dosis:wght@700&family=Roboto+Mono:wght@200&display=swap"
      rel="stylesheet"
    />

    <!-- CSS only -->
    <link
      href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css"
      rel="stylesheet"
      integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3"
      crossorigin="anonymous"
    />

        <script
      src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"
      integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p"
      crossorigin="anonymous"
    ></script>

  <link href="images/favicon.ico" rel="shortcut icon" type="image/x-icon" />
  </head>
  <body>
      <nav class="navbar navbar-expand-lg navbar-dark bg-dark fixed-top">
      <div class="container">
        <a class="navbar-brand text-secondary" href="index.html">Home</a>
        <button
          class="navbar-toggler"
          type="button"
          data-bs-toggle="collapse"
          data-bs-target="#navbarNav"
          aria-controls="navbarNav"
          aria-expanded="false"
          aria-label="Toggle navigation"
        >
          <span class="navbar-toggler-icon"></span>
        </button>
        <div class="collapse navbar-collapse" id="navbarNav">
          <ul class="navbar-nav">
            <li class="nav-item">
              <a class="nav-link text-secondary" href="about.html"
                >About me</a
              >
            </li>
                <li class="nav-item">
                  <a class="nav-link text-secondary" href="project.html">Projects</a>
                </li>
            <li class="nav-item">
              <a class="nav-link text-secondary" href="about.html#email">Contact me</a>
            </li>
          </ul>
        </div>
      </div>
    </nav>

    <div class="jumbotron jumbotron-fluid">
  <div class="container">
    <h1 class="display-4">Fluid jumbotron</h1>
    <p class="lead">This is a modified jumbotron that occupies the entire horizontal space of its parent.</p>
  </div>
</div>

    <div id="greeting">
      <img
        id="cat-icon"
        class="rounded mx-auto d-block pt-5"
        src="https://img.icons8.com/external-tulpahn-flat-tulpahn/64/000000/external-happy-cat-emoji-tulpahn-flat-tulpahn.png"
      />
      <br />
      <div class="sentence text-center">
        Hi
      </div>
    </div>
    </body>

【问题讨论】:

    标签: html css navbar bootstrap-5


    【解决方案1】:

    一个合适的解决方案是根据固定导航栏的高度将padding-top 添加到主要内容的开头。请参阅我在下面所做的更改。

    我在.jumbotron 上添加了固定高度,只是为了测试滚动。

    :root {
      --body-font: "Roboto Mono", monospace;
      --main-font: "Caveat", cursive;
      --secondary-font: "Dosis", sans-serif;
      --primary-color: salmon;
      --secondary-color: rgb(71, 66, 65) --box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
    }
    
    .navbar-brand {
      font-family: var(--main-font);
      font-size: 22px !important;
    }
    
    .text-secondary {
      color: rgb(94, 94, 94);
    }
    
    .jumbotron {
      height: 3000px;
    }
    <!DOCTYPE html>
    <html lang="en">
    
    <head>
      <meta charset="UTF-8" />
      <meta name="viewport" content="width=device-width, initial-scale=1.0" />
      <meta http-equiv="X-UA-Compatible" content="ie=edge" />
      <meta name="description" content="I'm Marizabelle Aldana, 27yo developer based in Guatemala, currently living in London.">
    
      <title>Marizabelle's website - Homepage</title>
    
      <link rel="stylesheet" href="src/styles.css" />
    
      <link rel="preconnect" href="https://fonts.googleapis.com" />
      <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
      <link rel="preconnect" href="https://fonts.googleapis.com" />
      <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
      <link href="https://fonts.googleapis.com/css2?family=Amatic+SC&family=Anton&family=Caveat:wght@600&family=Dosis:wght@700&family=Roboto+Mono:wght@200&display=swap" rel="stylesheet" />
    
      <!-- CSS only -->
      <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous" />
    
      <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"></script>
    
      <link href="images/favicon.ico" rel="shortcut icon" type="image/x-icon" />
    </head>
    
    <body>
      <nav class="navbar navbar-expand-lg navbar-dark bg-dark fixed-top">
        <div class="container">
          <a class="navbar-brand text-secondary" href="index.html">Home</a>
          <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
              <span class="navbar-toggler-icon"></span>
            </button>
          <div class="collapse navbar-collapse" id="navbarNav">
            <ul class="navbar-nav">
              <li class="nav-item">
                <a class="nav-link text-secondary" href="about.html">About me</a
                  >
                </li>
                    <li class="nav-item">
                      <a class="nav-link text-secondary" href="project.html">Projects</a>
              </li>
              <li class="nav-item">
                <a class="nav-link text-secondary" href="about.html#email">Contact me</a>
              </li>
            </ul>
          </div>
        </div>
      </nav>
      <section style="padding-top: 4em;">
        <div class="jumbotron jumbotron-fluid position-relative">
          <div class="container">
            <h1 class="display-4">Fluid jumbotron</h1>
            <p class="lead">This is a modified jumbotron that occupies the entire horizontal space of its parent.</p>
          </div>
        </div>
    
        <div id="greeting">
          <img id="cat-icon" class="rounded mx-auto d-block pt-5" src="https://img.icons8.com/external-tulpahn-flat-tulpahn/64/000000/external-happy-cat-emoji-tulpahn-flat-tulpahn.png" />
          <br />
          <div class="sentence text-center">
            Hi
          </div>
        </div>
      </section>
    </body>

    【讨论】:

      【解决方案2】:

      你应该在 index.css 的 body 上添加这个样式 填充顶部 = 70 像素;

      【讨论】:

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