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.
<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.
.span3 columns should be placed within a .span6.
<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>
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.
反正也有空，就跟大家把上次评论的一些疑惑理清。” 这个结论让毕胜和团队很痛苦，感觉找不到方向，好在资本方从未给他们压力，反而一直鼓励毕胜，“毕胜你自己去寻找方向，只要你这个团队在，不管做什么，如果你们有想法，继续投你，看好你们这个团队。
<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.
<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.
摘要：20岁，他怂恿七八个和他一样的孩子出走去北漂。1972年，由于成分不好，18岁的杨国强上大学无望，只好回家务农。
原药给力市场总监连佳星因此写道：“不要轻信TS，钱不到账的投资商都是耍流氓，我们团队一度在融资背景艰难的情况下，从去年12月到今天，一直把宝押在了一家已确定投资的传统药企，连投资协议都走完了，变卦其实只在一夜间，但调整已经来不及。 我还遇到过一家公司，在A轮融资的时候获取到了400万，其实他们拿出来的数据指标都惨到不行，但是他们却显得特别的骄傲。
| Label | Layout width | Column width | Gutter width |
|---|---|---|---|
| Smartphones | 480px and below | Fluid columns, no fixed widths | |
| Smartphones to tablets | 767px and below | Fluid columns, no fixed widths | |
| Portrait tablets | 768px and above | 42px | 20px |
| Default | 980px and up | 60px | 20px |
| Large display | 1200px and up | 70px | 30px |
但刘晓东不肯放手，于是说服董事会将巴克斯酒业以100元的价格，卖给以自己为首的几名自然人。
<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:
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) { ... }
For faster mobile-friendly development, use these basic utility classes for showing and hiding content by device.
当时没有跟阿里合作，反倒让我们在这段过程中不断磨炼自己，野蛮地成长才能活到现在。不过，从此王功权就彻底告别了奋斗20年的风投领域。
2014年，黑牛食品管理层换帅，新任总裁吴迪年以迅雷不及掩耳之势进军预调酒行业。 2016.3.23 新增大神排行榜、玩家资料个性签名、历史战绩查询、组队界面加好友、开房间观战。
在民众眼中，代表虚拟经济的互联网行业是烧钱游戏，金融业则是资本游戏。润晖投资提供两类不同的投资策略，相对收益策略和绝对收益策略，二者皆为做多型策略。
| Class | Phones 480px and below | Tablets 767px and below | Desktops 768px and above |
|---|---|---|---|
.visible-phone |
Visible | Hidden | Hidden |
.visible-tablet |
Hidden | Visible | Hidden |
.visible-desktop |
Hidden | Hidden | Visible |
.hidden-phone |
Hidden | Visible | Visible |
.hidden-tablet |
Visible | Hidden | Visible |
.hidden-desktop |
Visible | Visible | Hidden |