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.
今日头条则通过和芒果TV等平台合作加强了这块内容。不论是传统媒体人跳槽创业，还是外行人进入这一行业，大部分的新媒体已经完成了对媒体产业的重构。
<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.
大家都知道我是女海归设计师，听起来很牛逼的样子，却把生意做得一团糟。 “我们因此想修正这些问题，我们得另外创立一个独立的公司来完成这些任务，这就是Addepar,它让平台更开放。
” 吴奇隆从不轻易接受别人的投资。 但做生意终究要回归到商业本质，餐饮消费本质上是为了口腹之欲，网红餐厅骨子里仍是传统餐饮，“漂亮的外衣”确实能吸引顾客第一次消费，但不能指望用来满足顾客第二次、第三次的口腹之欲。
| 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 |
最近做内部分享的时候我们说，对标像亚马逊。
<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.
结果大众化没实现，“高端”的牌子却被砸了。 每次遍体鳞伤之后，我只能自己躲在角落里静静地舔伤口，然后像一只打不死的小强一样，重新开始。
就像历史上任何一次媒介变革一样，短视频的崛起再次印证一件事：每个时代都有每个时代的内容风口，只要有人去搭桥修路，必将有人在上面舞蹈。 简单的理解domain就是一个站点的反链域，也可以叫做站点的反向链接域名，而查询出来的搜索结果就是与之匹配的反向链接域名的数量(同一个网站可以被多次计算)。
“男人的时尚，女人的时尚，服饰、美妆，我们会在一个行业里继续打开。 20岁，他拿着红杉资本给他投的150万元天使资金，怂恿七八个和他一样的“孩子”，跟他“离家出走”去北漂。
| 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 |