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12

The default grid system provided in Bootstrap utilizes 12 columns that render out at widths of 724px, 940px (default without responsive CSS included), and 1170px. Below 767px viewports, the columns become fluid and stack vertically.

<div class="row">
    <div class="span4">...</div>
    <div class="span8">...</div>
</div>

As shown here, a basic layout can be created with two "columns", each spanning a number of the 12 foundational columns we defined as part of our grid system.


4
  雷军系老金山的很多人,脱离了雷军之后也都能抓住风口。
我们对如何看待这个世界有很多共识。
3 offset 3
8 offset 4
<div class="row">
    <div class="span4">...</div>
    <div class="span4 offset4">...</div>
</div>

With the static (non-fluid) grid system in Bootstrap, nesting is easy. To nest your content, just add a new .row and set of .span* columns within an existing .span* column.

p>Nested rows should include a set of columns that add up to the number of columns of it's parent. For example, two nested .span3 columns should be placed within a .span6.

Level 1 of column
  但最终,友友用车还是倒在了融资环节上。
Level 2
<div class="row">
     <div class="span6">
        Level 1 column
        <div class="row">
            <div class="span3">Level 2</div>
            <div class="span3">Level 2</div>
        </div>
    </div>
</div>

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6
6
12

The fluid grid system uses percents for column widths instead of fixed pixels. It also has the same responsive variations as our fixed grid system, ensuring proper proportions for key screen resolutions and devices.

仅仅只有一个半月的时间,股价就被打回原型,一度跌至9.9元。扪心自问,如果当时是我们身处那节车厢,我们会站出来吗?  这不禁让小财女想起了在网上看到的一句对此事的评论:最热心的永远是网友,最冷漠的永远是路人。

<div class="row-fluid">
    <div class="span4">...</div>
    <div class="span8">...</div>
</div>

Nesting with fluid grids is a bit different: the number of nested columns doesn't need to match the parent. Instead, your columns are reset at each level because each row takes up 100% of the parent column.

Fluid 12
  除此之外,张兰还喊过不少口号,一会要做餐饮业的LV,一会说要成为世界五百强……至于结果如何,大家也有目共睹。
Fluid 6
<div class="row-fluid">
    <div class="span12">
        Level 1 of column
        <div class="row-fluid">
            <div class="span6">Level 2</div>
            <div class="span6">Level 2</div>
        </div>
    </div>
</div>

The default and simple 940px-wide, centered layout for just about any website or page provided by a single <div class="container">.

<body>
    <div class="container">
        ...
    </div>
</body>

<div class="container-fluid"> gives flexible page structure, min- and max-widths, and a left-hand sidebar. It's great for apps and docs.

<div class="container-fluid">
    <div class="row-fluid">
        <div class="span2">
            <!--Sidebar content-->
        </div>
        <div class="span10">
            <!--Body content-->
        </div>
    </div>
</div>

Media queries allow for custom CSS based on a number of conditions—ratios, widths, display type, etc—but usually focuses around min-width and max-width.

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  低潮时,他给团队讲马云刚到北京受挫的经历,讲李嘉诚创办塑胶厂的经历,以这些“伟人”为榜样,激励自己也激励团队。  空空狐事件  出生于1990年的余小丹于2014年4月创立空空狐,空空狐被定位为国内最大的女性二手服饰垂直领域的C2C平台。

  在此期间,公司没有任何重大事项发生。  乐淘网一开始卖的玩具比较杂,质量也参差不齐,客户满意度不高,退换货造成的运营费用也不少。

LabelLayout widthColumn widthGutter width
Smartphones480px and belowFluid columns, no fixed widths
Smartphones to tablets767px and belowFluid columns, no fixed widths
Portrait tablets768px and above42px20px
Default980px and up60px20px
Large display1200px and up70px30px

而且他们的语言不够流畅,而且难以理解。

<meta name="viewport" content="width=device-width, initial-scale=1.0">

Bootstrap doesn't automatically include these media queries, but understanding and adding them is very easy and requires minimal setup. You have a few options for including the responsive features of Bootstrap:

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Why not just include it? Truth be told, not everything needs to be responsive. Instead of encouraging developers to remove this feature, we figure it best to enable it.

  /* Landscape phones and down */
  @media (max-width: 480px) { ... }

  /* Landscape phone to portrait tablet */
  @media (max-width: 767px) { ... }

  /* Portrait tablet to landscape and desktop */
  @media (min-width: 768px) and (max-width: 979px) { ... }

  /* Large desktop */
  @media (min-width: 1200px) { ... }

What are they

For faster mobile-friendly development, use these basic utility classes for showing and hiding content by device.

When to use

  在过去6个月内,我见了至少三家公司,如果它们之前没有在那么高的估值上进行融资的话,我们风投公司会非常愉快地跟它们签署投资协议的。对方说,“突然多了一笔数额过大的款项,了解一下是什么公司”。

我很感恩这家工厂几年来对我的无条件的支持和信任,以及我臭不要脸的拖欠着货款而他们从不催我还。一般我们建议是在6至8小时之间逐渐进行。

而一些情感家庭类网综的所谓精华剪辑版本,在一些短视频平台上的播放量非常可观。99%的人是给1%的人打工的,这其中总会有人出去想试试,大部分又会失败,回去赚工资的,这是个流动的过程。

ClassPhones 480px and belowTablets 767px and belowDesktops 768px and above
.visible-phoneVisible
.visible-tabletVisible
.visible-desktopVisible
.hidden-phoneVisibleVisible
.hidden-tabletVisibleVisible
.hidden-desktopVisibleVisible