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.
很多人都忘了，总觉得雷军是风口论的发明者，是新兴互联网行业的代表。 同样的情况殷实也有体会：最初朋友找到自己回国创业时，曾口头承诺过期权。
<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.
根据2016年第三季度数据，新三板影视行业平均归母利润为810.17万元，显著高于新三板全部行业平均水平，展现出良好的盈利能力。document.writeln('关注创业、电商、站长，扫描A5创业网微信二维码，定期抽大奖。
除了反恐、金融，他们的触角已经伸入到农业、医疗、消费等领域。因为它的内容值得我去付费;衍生品也很强，比如我们投资的“军武次位面”，做T恤一天卖了一万件;此外，做线下活动也很有潜力，比如军武组织大家去俄罗斯军事旅游。
| 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 |
在这之后，利用的歌声合成软件进行创作的原创歌曲也开始在niconico的平台上活跃起来，而其中部分歌曲的水准甚至能媲美业界
<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.
紧接着，那些舞蹈爱好者也来了，他们对这些原创歌曲进行编舞，并将舞蹈视频上传至“踊ってみた(试着跳一下)”的分类下(国内通常称之为宅舞)。 问：如何在松松软文里选择优质网站发布? 答：大网站、品牌网站、在加上高质量的内容，都有机会进入百度优质展示结果中，可继续参考松松软文里面的“新闻源”一栏。
2006年，张兰耗资3亿打造了兰会所，虽然有利于打造俏江南“高端奢华”的品牌，但3亿已经是俏江南3年的净利润了，可以说几乎抽干了俏江南的现金流。后期还推出同名小说和音乐，在磨铁中文网独家首发，点击突破130万次，在小范围内已经形成了IP效应，未来将投入1500万元连拍3部续集。
相比2016年第83位、2015年第84位、2013年第93位(2014年的数据不是很准确，坤鹏论查了一下发现也有说是93位的)、2012年第112位，咱们一直在上升，但依然还是没有脱离中游水平。 但随着公款消费的增加，大众消费的核心也被高档消费所代替，面向的也不再是普通老百姓，虽然在一定时期内让企业得利，但可持续性并不强，谁知道哪天政策会改? 果然，随着公款消费被遏制，俏江南的经营也陷入困境，后来宣布要进行大众化转型，但居然敢在自家店里卖28元一份的饭盒，兰会所的商务午餐，也仅仅100来元。
| 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 |