Flexbox教程

Flexbox Flex 方向

flex-direction 属性用于指定需要放置 flex 容器(flex-items)元素的方向。
使用-
flex-direction: row | row-reverse | column | column-reverse
此属性接受四个值-
row-从左到右水平排列容器的元素。 row-reverse-从右到左水平排列容器的元素。 column-从左到右垂直排列容器的元素。 column-reverse-从右到左垂直排列容器的元素。
现在,我们将举几个例子来演示 direction 属性的使用。

将此值传递给 direction 属性后,容器的元素将从左到右水平排列,如下所示。
行方向.jpg
以下示例演示了将值 row 传递给 flex-direction 属性的结果。在这里,我们使用 flex-directionrow 创建了六个不同颜色的框。
<!doctype html>
<html lang = "en">
   <style>
      .box1{background:green;}
      .box2{background:blue;}
      .box3{background:red;}
      .box4{background:magenta;}
      .box5{background:yellow;}
      .box6{background:pink;}
      
      .box{
         font-size:35px;
         padding:15px;
      }
      .container{
         display:inline-flex;
         border:3px solid black;
         flex-direction:row;
      }
   </style>
   
   <body>
      <div class = "container">
         <div class = "box box1">One</div>
         <div class = "box box2">two</div>
         <div class = "box box3">three</div>
         <div class = "box box4">four</div>
         <div class = "box box5">five</div>
         <div class = "box box6">six</div>
      </div>
   </body>
</html>

行反转

将此值传递给 direction 属性后,容器的元素将从右到左水平排列,如下所示。
Row Reverse.jpg
以下示例演示了将值 row-reverse 传递给 flex-direction 属性的结果。在这里,我们使用 flex-directionrow-reverse 创建了六个不同颜色的框。
<!doctype html>
<html lang = "en">
   <style>
      .box1{background:green;}
      .box2{background:blue;}
      .box3{background:red;}
      .box4{background:magenta;}
      .box5{background:yellow;}
      .box6{background:pink;}
      
      .box{
         font-size:35px;
         padding:15px;
      }
      .container{
         display:inline-flex;
         border:3px solid black;
         flex-direction:row-reverse;
      }
   </style>
   
   <body>
      <div class = "container">
         <div class = "box box1">One</div>
         <div class = "box box2">two</div>
         <div class = "box box3">three</div>
         <div class = "box box4">four</div>
         <div class = "box box5">five</div>
         <div class = "box box6">six</div>
      </div>
   </body>
</html>

将此值传递给 direction 属性后,容器的元素将从上到下垂直排列,如下所示。
Column Direction.jpg
以下示例演示了将值 column 传递给 flex-direction 属性的结果。在这里,我们使用 flex-directioncolumn 创建了六个不同颜色的框。
<!doctype html>
<html lang = "en">
   <style>
      .box1{background:green;}
      .box2{background:blue;}
      .box3{background:red;}
      .box4{background:magenta;}
      .box5{background:yellow;}
      .box6{background:pink;}
      
      .box{
         font-size:35px;
         padding:15px;
      }
      .container{
         display:inline-flex;
         border:3px solid black;
         flex-direction:column;
      }
   </style>
   <body>
      <div class = "container">
         <div class = "box box1">One</div>
         <div class = "box box2">two</div>
         <div class = "box box3">three</div>
         <div class = "box box4">four</div>
         <div class = "box box5">five</div>
         <div class = "box box6">six</div>
      </div>
   </body>
</html>

反列

将此值传递给 direction 属性后,容器的元素将从下到上垂直排列,如下所示。
方向列Reverse.jpg
以下示例演示了将值 column-reverse 传递给 flex-direction 属性的结果。在这里,我们使用 flex-directioncolumn-reverse 创建了六个不同颜色的框。
<!doctype html>
<html lang = "en">
   <style>
      .box1{background:green;}
      .box2{background:blue;}
      .box3{background:red;}
      .box4{background:magenta;}
      .box5{background:yellow;}
      .box6{background:pink;}
      
      .box{
         font-size:35px;
         padding:15px;
      }
      .container{
         display:inline-flex;
         border:3px solid black;
         flex-direction:column-reverse;
      }
   </style>
   
   <body>
      <div class = "container">
         <div class = "box box1">One</div>
         <div class = "box box2">two</div>
         <div class = "box box3">three</div>
         <div class = "box box4">four</div>
         <div class = "box box5">five</div>
         <div class = "box box6">six</div>
      </div>
   </body>
</html>
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