Question

我试图使用柔性盒和固定宽度将包装器居中。当我像100％一样向身体添加固定宽度并使用margin：0 auto;一切都被抛弃了。我希望包装器的固定宽度为1000px，并在体内居中（这就是为什么我将体设置为100％）。

感谢任何帮助。下面是HTML和CSS。

HTML：

<!doctype html>
<html lang="eng">
<head>
    <meta charset="utf-8" />
    <title>Flex box layout</title>

    <link rel="stylesheet" href="webtemp.css" />
</head>

<body>

  <div class="wrapper">
  <header class="header">Header</header>
  <article class="main">
    <p>Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Vestibulum tortor quam, feugiat vitae, ultricies eget, tempor sit amet, ante. Donec eu libero sit amet quam egestas semper. Aenean ultricies mi vitae est. Mauris placerat eleifend leo.</p>  
  </article>
  <aside class="aside aside-1">Aside 1</aside>
  <aside class="aside aside-2">Aside 2</aside>
  <footer class="footer">Footer</footer>
</div>
</body>


</html>

CSS：

.wrapper {
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-flex-flow: row wrap;
  flex-flow: row wrap;
  font-weight: bold;
  text-align: center;
}

.wrapper > * {
  padding: 10px;
  flex: 1 100%;
}

.header {
  background: tomato;
}

.footer {
  background: lightgreen;
}

.main {
  text-align: left;
  background: deepskyblue;
}

.aside-1 {
  background: gold;
}

.aside-2 {
  background: hotpink;
}

@media all and (min-width: 600px) {
  .aside {
    flex: 1 auto;
  }
}
@media all and (min-width: 800px) {
  .main {
    flex: 3 0px;
  }

  .aside-1 {
    order: 1;
  }

  .main {
    order: 2;
  }

  .aside-2 {
    order: 3;
  }

  .footer {
    order: 4;
  }
}
body {
  padding: 2em;
}

Answer 1

应用固定宽度并使用margin:0px auto;对齐中心。

.wrapper {
display: -webkit-box;
display: -moz-box;
display: -ms-flexbox;
display: -webkit-flex;
display: flex;
-webkit-flex-flow: row wrap;
flex-flow: row wrap;
font-weight: bold;
text-align: center;
width:300px;
margin:0px auto;
}

DEMO

Answer 2

只需将.wrapper的宽度设置为1000px;

.wrapper {
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-flex-flow: row wrap;
  flex-flow: row wrap;
  font-weight: bold;
  text-align: center;
  width:1000px;
}

.wrapper > * {
  padding: 10px;
  flex: 1 100%;
}

.header {
  background: tomato;
}

.footer {
  background: lightgreen;
}

.main {
  text-align: left;
  background: deepskyblue;
}

.aside-1 {
  background: gold;
}

.aside-2 {
  background: hotpink;
}

@media all and (min-width: 600px) {
  .aside {
    flex: 1 auto;
  }
}
@media all and (min-width: 800px) {
  .main {
    flex: 3 0px;
  }

  .aside-1 {
    order: 1;
  }

  .main {
    order: 2;
  }

  .aside-2 {
    order: 3;
  }

  .footer {
    order: 4;
  }
}
body {
  padding: 2em;
}

<div class="wrapper">
  <header class="header">Header</header>
  <article class="main">
    <p>Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Vestibulum tortor quam, feugiat vitae, ultricies eget, tempor sit amet, ante. Donec eu libero sit amet quam egestas semper. Aenean ultricies mi vitae est. Mauris placerat eleifend leo.</p>  
  </article>
  <aside class="aside aside-1">Aside 1</aside>
  <aside class="aside aside-2">Aside 2</aside>
  <footer class="footer">Footer</footer>
</div>

强调文字

CSS flexbox以固定宽度居中

2 个答案: