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html - 使用 flexbox 通过媒体查询转换水平导航栏

转载 作者：行者123 更新时间：2023-11-28 01:41:09 25 4
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我决定首先让我的网站移动，所以我创建了一个标题，它是一个 block 级元素。它旨在显示在它做得很好的列中。但是，无论我做什么，即使使用 flexbox，我也无法将显示变成水平导航栏。它意味着在 css 文件底部的 960 媒体查询处打开导航。 

<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title></title>
    <link rel="stylesheet" href="styles.css">
    <link href="https://fonts.googleapis.com/css?family=Roboto:300i" rel="stylesheet">

  </head>
  <body>
    <header>
 <nav>
   <li><a href = "#"> Home</a></li>
   <li><a href = "#"> Heading1</a></li>
   <li><a href = "#"> Heading2</a></li>
   <li><a href = "#"> Heading3</a></li>
 </nav>
    </header>
    <div class="container">
      <div class="side1">
        <h2>Column 1</h2>
        <p>
          "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
        </p>
      </div>

      <div class="main-content">
      <h2>Main-content</h2>
        <p>
          "But I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system, and expound the actual teachings of the great explorer of the truth, the master-builder of human happiness. No one rejects, dislikes, or avoids pleasure itself, because it is pleasure, but because those who do not know how to pursue pleasure rationally encounter consequences that are extremely painful. Nor again is there anyone who loves or pursues or desires to obtain pain of itself, because it is pain, but because occasionally circumstances occur in which toil and pain can procure him some great pleasure. To take a trivial example, which of us ever undertakes laborious physical exercise, except to obtain some advantage from it? But who has any right to find fault with a man who chooses to enjoy a pleasure that has no annoying consequences, or one who avoids a pain that produces no resultant pleasure?"
        </p>
      </div>

      <div class="side2">
        <h2>Column 2</h2>
          <p>
            "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
          </p>
      </div>
    </div>
  </body>
</html>

这是我的CSS

header {
  -webkit-box-shadow: -1px 2px 17px 0px rgba(0,0,0,0.75);
-moz-box-shadow: -1px 2px 17px 0px rgba(0,0,0,0.75);
 box-shadow: -1px 2px 17px 0px    rgba(0,0,0,0.75);
 display:inline-block;
  width: 100%;
  border-radius: 5px;
  background-color: white;
  border-color: black;
  height: 40%;
  margin-bottom: 3%;
  padding: 20px;
}

nav {
  display: block;
}

nav li {
  font-weight: 700;
  list-style-type: none;
  text-align: center;

  font-size: 25px;
  font-weight: bold;
  font-family: Roboto, sans-serif;
}

li {
  border-top: grey solid 1px;

}

nav a {
  text-decoration: none;
  color: grey;
  display:inline-block;
  line-height: 45px;
}

li:nth-child(1){
  border-top: none;
   padding-bottom:10px;
  margin:0px;
}

li:nth-child(2){
padding-top:10px;
margin:0px;

}

li:nth-child(3){
margin:0px;
padding-top:10px;

}

li:nth-child(4){
margin:0px;
padding-top:10px;

}


.container {
  display: flex;
  flex-direction: column;
  flex-wrap: nowrap;
  justify-content: space-between;
  font-family: Roboto,sans-serif;
  line-height: 1.6;
}

.side1 {
  -webkit-box-shadow: -1px 2px 17px 0px rgba(0,0,0,0.75);
-moz-box-shadow: -1px 2px 17px 0px rgba(0,0,0,0.75);
 box-shadow: -1px 2px 17px 0px    rgba(0,0,0,0.75);
  width:100%;
  background: white;
  border-color: black;
  text-align: center;
  margin-bottom: 10px;
}

.main-content {
  -webkit-box-shadow: -1px 2px 17px 0px rgba(0,0,0,0.75);
-moz-box-shadow: -1px 2px 17px 0px rgba(0,0,0,0.75);
 box-shadow: -1px 2px 17px 0px    rgba(0,0,0,0.75);

 width:100%;
 background: white;
 border-color: black;
 text-align: center;
 margin-bottom: 10px;

}

.side2 {
  -webkit-box-shadow: -1px 2px 17px 0px rgba(0,0,0,0.75);
-moz-box-shadow: -1px 2px 17px 0px rgba(0,0,0,0.75);
 box-shadow: -1px 2px 17px 0px    rgba(0,0,0,0.75);
 width:100%;
 background: white;
 border-color: black;
 text-align: center;
 margin-bottom: 10px;
}

@media screen and (min-width : 726px) {


@media screen and (min-width : 900px) {
  .header {
  display:flex;
    }

    .nav {
      display: flex;
      flex-direction: row;
    }

  .container  {
    display:flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-around;
    flex-wrap: wrap;
  }

  .main-content {
    border-left: lightgrey 1px solid;
    border-right: lightgrey 1px solid;

    width: 33.3%;
  }

  .side1 {

      width: 30%;
  }


  .side2 {

    width: 30%;
  }

}

最佳答案

您应该将 .header 更改为 header 并将 .nav 更改为 nav 以定义标题和导航的类在你的媒体查询中标记。点 . 不应使用，因为您不是针对类而是针对标记。

    @media screen and (min-width : 900px) {
  header {
  display:flex;
    }

    nav {
      display: flex;
      flex-direction: row;
    }

  .container  {
    display:flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-around;
    flex-wrap: wrap;
  }

  .main-content {
    border-left: lightgrey 1px solid;
    border-right: lightgrey 1px solid;

    width: 33.3%;
  }

  .side1 {

      width: 30%;
  }


  .side2 {

    width: 30%;
  }

}

关于html - 使用 flexbox 通过媒体查询转换水平导航栏，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/50428070/

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