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.
很多投资人卖老股的时候，上来就问我这股能卖多少钱。所以LifeWater这半瓶水的概念即只需装满半瓶水，余下的那半瓶则由LifeWater公司直接替消费者输送到缺水地区捐赠给当地的孩子们。
<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.
还有一批用户则利用“MMD”这种3D软件制作出原创的CG动画，从而以另一种方式来演绎那些Vocaloid原创歌曲。 吉比特最近表示，由于网游行业市场竞争的日趋激烈，且《问道手游》上线运营时间较短，运营情况尚未稳定，以及公司未来经营所面临的其他风险，都可能导致公司经营业绩波动或下滑。
截至2015年12月，白山已与搜狐、凤凰网、汽车之家等36家客户签约，实现了数千万元的收入。 真实的鼎晖投资到底什么模样? 在众多粉丝的提问之下，GPLP试图给大家还原一个真实的鼎晖投资。
| 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 |
上市的热乎劲还没过，杨国强又搞出了大动作。
<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.
业绩不错，又要IPO，但为什么股价却跌成了翔? 也许，这与峻岭能源此前的一则公告相关。对比端游而言，手游能够平衡竞技与娱乐，耗时相对较少，玩家更易上手和利用碎片时间。
冰桶挑战、“华妃”蒋欣模仿金星斗空姐片段等事件让微博上的秒拍、小咖秀火爆一时，由于更适合用户碎片化时间，短视频得到快速流行。” 但此时的毕胜已经顾不上那么多了，他更着急的是乐淘如何突围，“电子商务是骗局，但是电子和商务拆开就是一个生意，所以大家发现马云赚钱了，因为他只做电子。
2015年4月，创业邦天使基金给他投了3000万美元B轮，他的公司估值达2亿美金。 当然，王功权最需要的是有现成的赚钱案例。
| 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 |