Direction ancillary indication 是啥意思?

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参考技术A 方向辅助标志 参考技术B 方向辅助标示 参考技术C 方向辅助标志 参考技术D Mulitpurpose Pocket Survival Tool
This is a perfect gift for those who love the outdoors. This amazing credit card size survival tool comes with 10 functions including a 4 position wrench. Crafted in stainless steel, this is the perfect gift for those on camping trips, fishing trips, military missions or just for plain fun.

• includes the all-important, end-of-day bottle opener
• direction ancillary indication (方向辅助标识)
• offered in black waterproof synthetic leather protective casing
• measures 7cm by 4.5cm

USD4.50 (FOB)

弹性盒子 flex-direction

  使用弹性盒子可以更方便的对页面内容进行布局

  flex-direction指定了子元素在父元素盒子中的排列方式

  1.flex-direction:row

    flex默认排列方式,从左到右排列,左对齐

  2.flex-direction:row-reverse

    与row反向,从右向左排列,右对齐,第一个在最右边

  3.flex-direction:column

    从上到下依次排列,向上对齐

  4.flex-direction:column-reverse

    与column相反,从下到上对齐,第一个在最下面

 

  说明:HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>flex</title>
    <link rel="stylesheet" href="flex.css">
</head>
<body>
    <div id="content">
        <div>div1</div>
        <div>div2</div>
        <div>div3</div>
    </div>
</body>
</html>

    row:

#content
{
    width: 500px;
    height: 500px;
    background: #0395e1;
    display: flex;
    flex-direction: row;
}
#content>div
{
    width: 100px;
    height: 100px;
    margin: 10px;
    background: #e53935;
}

    样式:

    技术图片

    row-reverse:

    

#content
{
    width: 500px;
    height: 500px;
    background: #0395e1;
    display: flex;
    flex-direction: row-reverse;
}
#content>div
{
    width: 100px;
    height: 100px;
    margin: 10px;
    background: #e53935;
}

    样式:

    技术图片

    column:

    

#content
{
    width: 500px;
    height: 500px;
    background: #0395e1;
    display: flex;
    flex-direction:column;
}
#content>div
{
    width: 100px;
    height: 100px;
    margin: 10px;
    background: #e53935;
}

    样式:

    技术图片

    column-reverse:

    

#content
{
    width: 500px;
    height: 500px;
    background: #0395e1;
    display: flex;
    flex-direction:column-reverse;
}
#content>div
{
    width: 100px;
    height: 100px;
    margin: 10px;
    background: #e53935;
}

    样式:

    技术图片

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