Flexbox 容器居中挑战

分类：编程问答

如何解决Flexbox 容器居中挑战

早上好，

我在将 flexbox 容器本身居中时遇到了挑战。我已经设法将 flexbox 中的所有 5 个元素居中，但实际上无法让容器本身水平居中到页面中间。

我在陷入困境后观看了一个教程，可以看到我的代码除了容器的命名之外是相同的。提供您可以看到其代码的确切秒的时间戳：https://youtu.be/fJc18fT4T3s?t=542。在他们的教程中，作为我的“图像容器”的“趋势容器”居中，而我的不是。我试过使用 margin: 0 auto;但这没有任何作用，容器停留在页面的左侧。

我不得不将 text-align: center 添加到我的，因为文本没有对齐。

如果有人能告诉我我做错了什么，不允许这个 flexbox 容器居中，那就太好了，因为我有点难住了！

body {
  font-family: "helvetica",sans-serif;
  font-size: 22px;
  color: seashell;
  opacity: 0.9;
  background-color: black;
}

.mission h2,#featured h2 {
  margin: 10px 0px 5px 0px;
  text-align: center;
}

.mission h4,#featured h4 {
  margin: 15px 0px 10px 0px;
  text-align: center;
}


/* ---------------Navigation ----------------*/

.navbar {
  height: 69px;
  width: 100%;
  border-bottom: 1px seashell solid;
  background-color: black;
  position: fixed;
  z-index: 10;
  align-items: center;
  left: 0;
  top: 0;
}

.logo {
  height: 50px;
  margin-left: 0.45rem;
  position: relative;
  top: 5px;
}

.navlist {
  position: relative;
  float: right;
  margin-right: 0.45rem;
}

.navlist a {
  color: seashell;
}

.navbar .navlist ul {
  list-style: none;
  position: relative;
}

.navbar .navlist ul li {
  display: inline-block;
  text-decoration: underline;
  padding: 0px 10px;
}


/* ------------------Banner Section --------------*/

#mission {
  width: 1200px;
  height: 700px;
  background-image: url("https://content.codecademy.com/courses/freelance-1/unit-4/img-mission-background.jpg");
  margin: 70px auto;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.mission {
  width: 100%;
  background-color: black;
  margin: 0 auto;
  text-align: center;
}


/*---------------Tea of the Month ------------------*/

.image-container {
  display: inline-flex;
  max-width: 1000px;
  height: auto;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.image img {
  height: 200px;
  width: 300px;
  padding: 10px 10px;
}
<html>

<head>
  <title>Tea Cozy</title>
  <link href="C:\Users\Jason\Desktop\Coding\Projects\teacosy\global.css" type="text/css" rel="stylesheet">
</head>

<body>


  <!-----------------Nav Bar--------------------->


  <nav class="navbar">
    <img class="logo" src="https://content.codecademy.com/courses/freelance-1/unit-4/img-tea-cozy-logo.png" alt="Tea Cozy logo">
    <div class="navlist">
      <ul>
        <li><a href="#mission">Mission</a></li>
        <li><a href="#featured">Featured Tea</a></li>
        <li><a href="">Locations</a></li>
      </ul>
    </div>
  </nav>


  <!-------------------Banner--------------------->


  <div id="mission">
    <div class="mission">
      <h2>Our Misson</h2>
      <h4>Handpicked,Artisanally Curated,Free Range,Sustainable,Small Batch,Fair Trade,Organic Tea</h4>
    </div>
  </div>


  <!-------------------Tea of the Month-------------------->


  <div id="featured">
    <h2>Tea of the Month</h2>
    <h4>What's Steeping at The Tea Cozy?</h4>
  </div>
  <div class="image-container">
    <div class="image">
      <img src="https://content.codecademy.com/courses/freelance-1/unit-4/img-berryblitz.jpg">
      <h4>Fall Berry Blitz Tea</h4>
    </div>
    <div class="image">
      <img src="https://content.codecademy.com/courses/freelance-1/unit-4/img-spiced-rum.jpg">
      <h4>Spiced Rum Tea</h4>
    </div>
    <div class="image">
      <img src="https://content.codecademy.com/courses/freelance-1/unit-4/img-donut.jpg">
      <h4>Seasonal Donuts</h4>
    </div>
    <div class="image">
      <img src="https://content.codecademy.com/courses/freelance-1/unit-4/img-myrtle-ave.jpg">
      <h4>Myrtle Ave Tea</h4>
    </div>
    <div class="image">
      <img src="https://content.codecademy.com/courses/freelance-1/unit-4/img-bedford-bizarre.jpg">
      <h4>Bedford Bizarre Tea</h4>
    </div>
  </div>

</body>

</html>

解决方法

将 display: inline-flex 更改为 display: flex 并将 margin: 0 auto 添加到 <div class="image-container"> 容器修复了页面该部分的居中对齐问题。

body {
  font-family: "helvetica",sans-serif;
  font-size: 22px;
  color: seashell;
  opacity: 0.9;
  background-color: black;
}

.mission h2,#featured h2 {
  margin: 10px 0px 5px 0px;
  text-align: center;
}

.mission h4,#featured h4 {
  margin: 15px 0px 10px 0px;
  text-align: center;
}


/* ---------------Navigation ----------------*/

.navbar {
  height: 69px;
  width: 100%;
  border-bottom: 1px seashell solid;
  background-color: black;
  position: fixed;
  z-index: 10;
  align-items: center;
  left: 0;
  top: 0;
}

.logo {
  height: 50px;
  margin-left: 0.45rem;
  position: relative;
  top: 5px;
}

.navlist {
  position: relative;
  float: right;
  margin-right: 0.45rem;
}

.navlist a {
  color: seashell;
}

.navbar .navlist ul {
  list-style: none;
  position: relative;
}

.navbar .navlist ul li {
  display: inline-block;
  text-decoration: underline;
  padding: 0px 10px;
}


/* ------------------Banner Section --------------*/

#mission {
  width: 1200px;
  height: 700px;
  background-image: url("https://content.codecademy.com/courses/freelance-1/unit-4/img-mission-background.jpg");
  margin: 70px auto;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.mission {
  width: 100%;
  background-color: black;
  margin: 0 auto;
  text-align: center;
}


/*---------------Tea of the Month ------------------*/

.image-container {
  display: flex;
  max-width: 1000px;
  height: auto;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  text-align: center;
  margin: 0 auto;
}

.image img {
  height: 200px;
  width: 300px;
  padding: 10px 10px;
}
<html>

<head>
  <title>Tea Cozy</title>
  <link href="C:\Users\Jason\Desktop\Coding\Projects\teacosy\global.css" type="text/css" rel="stylesheet">
</head>

<body>


  <!-----------------Nav Bar--------------------->


  <nav class="navbar">
    <img class="logo" src="https://content.codecademy.com/courses/freelance-1/unit-4/img-tea-cozy-logo.png" alt="Tea Cozy logo">
    <div class="navlist">
      <ul>
        <li><a href="#mission">Mission</a></li>
        <li><a href="#featured">Featured Tea</a></li>
        <li><a href="">Locations</a></li>
      </ul>
    </div>
  </nav>


  <!-------------------Banner--------------------->


  <div id="mission">
    <div class="mission">
      <h2>Our Misson</h2>
      <h4>Handpicked,Artisanally Curated,Free Range,Sustainable,Small Batch,Fair Trade,Organic Tea</h4>
    </div>
  </div>


  <!-------------------Tea of the Month-------------------->


  <div id="featured">
    <h2>Tea of the Month</h2>
    <h4>What's Steeping at The Tea Cozy?</h4>
  </div>
  <div class="image-container">
    <div class="image">
      <img src="https://content.codecademy.com/courses/freelance-1/unit-4/img-berryblitz.jpg">
      <h4>Fall Berry Blitz Tea</h4>
    </div>
    <div class="image">
      <img src="https://content.codecademy.com/courses/freelance-1/unit-4/img-spiced-rum.jpg">
      <h4>Spiced Rum Tea</h4>
    </div>
    <div class="image">
      <img src="https://content.codecademy.com/courses/freelance-1/unit-4/img-donut.jpg">
      <h4>Seasonal Donuts</h4>
    </div>
    <div class="image">
      <img src="https://content.codecademy.com/courses/freelance-1/unit-4/img-myrtle-ave.jpg">
      <h4>Myrtle Ave Tea</h4>
    </div>
    <div class="image">
      <img src="https://content.codecademy.com/courses/freelance-1/unit-4/img-bedford-bizarre.jpg">
      <h4>Bedford Bizarre Tea</h4>
    </div>
  </div>

</body>

</html>

,

对于“image-container”，“body”的父元素不是 flex 或 grid 项目。快速修复设置：body 是一个 flex 容器和“flex-direction 到列，然后为”image-container 设置“align-self: center;”像这样：

body {
    font-family: "helvetica",sans-serif;
    font-size: 22px;
    color: seashell;
    opacity: 0.9;
    background-color: black;
    display: flex;
    flex-direction: column;
    }
.image-container {
    display: inline-flex;
    max-width: 1000px;
    height: auto;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    text-align: center;
    align-self: center;
}

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