HTML 导航栏链接不可点击答案

【问题标题】：HTML Nav bar links not clickableHTML 导航栏链接不可点击
【发布时间】：2019-06-22 08:18:26
【问题描述】：

上周我一直在学习 HTML 和 CSS，并决定使用导航栏。我已经设置好了，但现在顶部的链接不可点击？我已经检查以确保我没有错过任何基本的东西，比如结束标签，但找不到类似的东西。

* {
  margin: 0;
  padding: 0;
}

html {
  background-color: #808080;
  background-image: url("https://hdqwalls.com/download/simple-gray-abstract-background-wi-1920x1080.jpg");
  background-repeat: no-repeat;
}

#landing__container {
  height: 100vh;
  width: 100%;
}

header {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: rgba(255, 0, 0, 0.4);
}

header h1 {
  color: white;
  font-family: impact;
  font-weight: normal;
}

header ul {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  height: 30px;
}

header ul li {
  list-style: none;
}

header a {
  font-family: helvetica;
  font-weight: bold;
  font-size: 18px;
  text-decoration: none;
  color: white;
  margin: 30px;
}

#landing__center {
  display: flex;
  flex-direction: column;
  text-align: center;
  justify-content: center;
  align-items: center;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  position: absolute;
}

#landing__center h2 {
  padding-bottom: 20px;
  color: white;
  font-family: Impact;
  font-weight: normal;
  font-size: 40px;
}

#landing__center p {
  padding-top: 20px;
  color: white;
  font-family: helvetica;
  font-weight: normal;
  font-size: 20px;
}

<!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" />
    <title>Navigation Bar Practice</title>
    <link rel="stylesheet" type="text/css" href="style.css" />
  </head>

  <body>
    <div id="landing__container">
      <!-- Navigation Bar -->
      <header>
        <nav id="nav__bar">
          <ul>
            <li><a href="#">Home</a></li>
            <li><a href="#">Documentation</a></li>
            <li><a href="#">About</a></li>
            <li><a href="#">Contact</a></li>
          </ul>
        </nav>
      </header>

      <section id="landing__center">
        <h2>Testing</h2>
        <p>
          Lorem, ipsum dolor sit amet consectetur adipisicing elit. Rem
          voluptatum asperiores illum maiores aliquid quo perferendis,
          blanditiis facere temporibus laudantium!
        </p>
      </section>
    </div>
  </body>
</html>

我知道代码可能并不完美和/或干净，但请记住，我已经这样做了一周。

【问题讨论】：

将z-index:999; 添加到您的header ul li

标签： css html nav

【解决方案1】：

您已经制作了此部分 #landing__center position:absolute 和 top:0 这就是它出现在导航栏顶部的原因。我已将顶部增加到 30。谢谢

* {
  margin: 0;
  padding: 0;
}

html {
  background-color: #808080;
  background-image: url("https://hdqwalls.com/download/simple-gray-abstract-background-wi-1920x1080.jpg");
  background-repeat: no-repeat;
}

#landing__container {
  height: 100vh;
  width: 100%;
}

header {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: rgba(255, 0, 0, 0.4);
}

header h1 {
  color: white;
  font-family: impact;
  font-weight: normal;
}

header ul {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  height: 30px;
}

header ul li {
  list-style: none;
}

header a {
  font-family: helvetica;
  font-weight: bold;
  font-size: 18px;
  text-decoration: none;
  color: white;
  margin: 30px;
}

#landing__center {
  display: flex;
  flex-direction: column;
  text-align: center;
  justify-content: center;
  align-items: center;
  top: 30; /*changed*/
  bottom: 0;
  left: 0;
  right: 0;
  position: absolute;
}

#landing__center h2 {
  padding-bottom: 20px;
  color: white;
  font-family: Impact;
  font-weight: normal;
  font-size: 40px;
}

#landing__center p {
  padding-top: 20px;
  color: white;
  font-family: helvetica;
  font-weight: normal;
  font-size: 20px;
}

<!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" />
    <title>Navigation Bar Practice</title>
    <link rel="stylesheet" type="text/css" href="style.css" />
  </head>

  <body>
    <div id="landing__container">
      <!-- Navigation Bar -->
      <header>
        <nav id="nav__bar">
          <ul>
            <li><a href="#">Home</a></li>
            <li><a href="#">Documentation</a></li>
            <li><a href="#">About</a></li>
            <li><a href="#">Contact</a></li>
          </ul>
        </nav>
      </header>

      <section id="landing__center">
        <h2>Testing</h2>
        <p>
          Lorem, ipsum dolor sit amet consectetur adipisicing elit. Rem
          voluptatum asperiores illum maiores aliquid quo perferendis,
          blanditiis facere temporibus laudantium!
        </p>
      </section>
    </div>
  </body>
</html>

【讨论】：

看全页，header被推到了中心下方
你能解释一下你想说什么吗？谢谢
运行sn-p，然后点击整页

【解决方案2】：

您需要将z-index 和position: relative 添加到您的代码中

header{
  z-index: 1;
  position: relative;
}

【讨论】：

【解决方案3】：

问题是由#landing__center覆盖导航栏引起的，因为它选择了#landing__container作为与之相关的元素

一种方法是创建一个包装器来充当#landing__center 的容器，而不是 #landing__container。这样它就相对于它自己的容器而不是它的父容器，不干扰它的兄弟姐妹

* {
  margin: 0;
  padding: 0;
}

html {
  background-color: #808080;
  background-image: url("https://hdqwalls.com/download/simple-gray-abstract-background-wi-1920x1080.jpg");
  background-repeat: no-repeat;
}

#landing__container {
  height: 100vh;
  width: 100%;
}

header {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: rgba(255, 0, 0, 0.4);
}

header h1 {
  color: white;
  font-family: impact;
  font-weight: normal;
}

header ul {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  height: 30px;
}

header ul li {
  list-style: none;
}

header a {
  font-family: helvetica;
  font-weight: bold;
  font-size: 18px;
  text-decoration: none;
  color: white;
  margin: 30px;
}

.wrapper {
  position: relative;
  height: 95%;
}

#landing__center {
  display: flex;
  flex-direction: column;
  text-align: center;
  justify-content: center;
  align-items: center;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  position: absolute;
}

#landing__center h2 {
  padding-bottom: 20px;
  color: white;
  font-family: Impact;
  font-weight: normal;
  font-size: 40px;
}

#landing__center p {
  padding-top: 20px;
  color: white;
  font-family: helvetica;
  font-weight: normal;
  font-size: 20px;
}

<body>
  <div id="landing__container">
    <!-- Navigation Bar -->
    <header>
      <nav id="nav__bar">
        <ul>
          <li><a href="#">Home</a></li>
          <li><a href="#">Documentation</a></li>
          <li><a href="#">About</a></li>
          <li><a href="#">Contact</a></li>
        </ul>
      </nav>
    </header>

    <div class="wrapper">
      <section id="landing__center">
        <h2>Testing</h2>
        <p>
          Lorem, ipsum dolor sit amet consectetur adipisicing elit. Rem voluptatum asperiores illum maiores aliquid quo perferendis, blanditiis facere temporibus laudantium!
        </p>
      </section>
    </div>
  </div>
</body>

【讨论】：