1
1
1
1
1
1
1
1
1
1
1
1
4
4
4
4
8
6
6
12

The default grid system provided as part of Bootstrap is a 940px-wide, 12-column grid.

It also has four responsive variations for various devices and resolutions: phone, tablet portrait, table landscape and small desktops, and large widescreen desktops.

<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.


赤水台恒巨商贸有限公司

4
4 offset 4
3 offset 3
3 offset 3
8 offset 4
<div class="row">
  <div class="span4">...</div>
  <div class="span4 offset4">...</div>
</div>

吉林复欣万服务有限公司

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.

黎川合广康机械有限公司

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
Level 2
Level 2
<div class="row">
  <div class="span12">
    Level 1 of column
    <div class="row">
      <div class="span6">Level 2</div>
      <div class="span6">Level 2</div>
    </div>
  </div>
</div>

牡丹江久生昌商贸有限公司

1
1
1
1
1
1
1
1
1
1
1
1
4
4
4
4
8
6
6
12

儋州佳巨浩服务有限公司

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.

绵阳久源辉商贸有限公司

Make any row fluid simply by changing .row to .row-fluid. The columns stay the exact same, making it super straightforward to flip between fixed and fluid layouts.

常熟公佳泰服务有限公司

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

黄石亨如协有限公司

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
Fluid 6
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>
Variable Default value Description
@gridColumns 12 Number of columns
@gridColumnWidth 60px Width of each column
@gridGutterWidth 20px Negative space between columns
@siteWidth Computed sum of all columns and gutters Counts number of columns and gutters to set width of the .container-fixed() mixin

蒲圻厚福润商贸有限公司

Built into Bootstrap are a handful of variables for customizing the default 940px grid system, documented above. All variables for the grid are stored in variables.less.

耒阳兴亚伟商贸有限公司

Modifying the grid means changing the three @grid* variables and recompiling Bootstrap. Change the grid variables in variables.less and use one of the four ways documented to recompile. If you're adding more columns, be sure to add the CSS for those in grid.less.

乌海福瑞茂设备有限公司

Customization of the grid only works at the default level, the 940px grid. To maintain the responsive aspects of Bootstrap, you'll also have to customize the grids in responsive.less.

二连浩特裕兴大科技有限公司

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>

博乐寿亚隆科技有限公司

<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>

秀色直播app下载iOS

乌海亨金耀贸易有限公司

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.

  • Modify the width of column in our grid
  • Stack elements instead of float wherever necessary
  • Resize headings and text to be more appropriate for devices

Use media queries responsibly and only as a start to your mobile audiences. For larger projects, do consider dedicated code bases and not layers of media queries.

奎屯服务有限公司

Bootstrap supports a handful of media queries in a single file to help make your projects more appropriate on different devices and screen resolutions. Here's what's included:

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

毕节优盈久有限公司

To ensure devices display responsive pages properly, include the viewport meta tag.

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

阜阳宝协谦科技有限公司

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:

  1. Use the compiled responsive version, bootstrap-responsive.css
  2. Add @import "responsive.less" and recompile Bootstrap
  3. Modify and recompile responsive.less as a separate file

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: 768px) { ... }

// Portrait tablet to landscape and desktop
@media (min-width: 768px) and (max-width: 980px) { ... }

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

浙江省寿伟欣科技有限公司

北票盈盈瑞服务有限公司

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

日照瑞永永机械有限公司

Use on a limited basis and avoid creating entirely different versions of the same site. Instead, use them to complement each device's presentation.

For example, you might show a <select> element for nav on mobile layouts, but not on tablets or desktops.

仙桃寿宏瑞贸易有限公司

Shown here is a table of the classes we support and their effect on a given media query layout (labeled by device). They can be found in responsive.less.

Class Phones 480px and below Tablets 767px and below Desktops 768px and above
.visible-phone Visible
.visible-tablet Visible
.visible-desktop Visible
.hidden-phone Visible Visible
.hidden-tablet Visible Visible
.hidden-desktop Visible Visible

江山亚益瑞设备有限公司

Resize your browser or load on different devices to test the above clases.

牡丹江皇润晶商贸有限公司

  • Phone✔ Phone
  • Tablet✔ Tablet
  • Desktop✔ Desktop

吉首欣满恒商贸有限公司

  • Phone✔ Phone
  • Tablet✔ Tablet
  • Desktop✔ Desktop
花心社区app下载iOS 七秒鱼直播app下载污 大菠萝app官网 仙人掌app官网 食色app下载污 富二代f2抖音app下载iOS 千层浪直播app下载iOS Avboboapp官网 豆奶抖音短视频app官网 樱桃视频app官网 色秀直播app下载污 花秀神器app下载污 桃花直播app下载iOS 月亮直播app下载污 合欢视频app下载iOS 富二代短视频app官网 卡哇伊直播app官网 米老鼠直播app下载iOS 食色短视频app下载iOS 本色视频app下载污 富二代f2app官网 橙子视频app官网 bobo直播app下载污 芭乐app下载污 快狐短视频app下载污 美梦视频app官网 蜜柚app下载iOS 柠檬直播app官网 猫咪视频app官网 含羞草app官网 幸福宝app官网 草鱼app下载污 火爆社区app官网 红娘直播app官网 快播破解app下载iOS 豆奶视频app官网 荔枝视频app下载污 快狐短视频app下载iOS 樱桃视频app下载污 可乐视频app下载污 薰衣草直播app下载iOS 91香蕉app下载iOS 小猪视频app官网 小仙女app下载iOS 主播大秀app下载iOS 荔枝app下载污 小喵直播app下载iOS 夏娃直播app下载iOS s8视频app官网 初恋视频app下载污 health2app官网 Avnightapp下载iOS 红高粱直播app官网 柠檬视频app下载iOS 雨云直播app官网 享爱直播app下载iOS 成人直播app官网 名优馆app下载污 橘子视频app下载iOS 杏花直播app官网 抖阴app下载iOS 丝瓜app官网 小草视频app官网 木瓜视频app下载污 草榴直播app下载污 红娘直播app下载污 本色视频app官网 彩色直播app下载iOS 蜜桃直播app下载污 千层浪直播app官网 黄瓜视频人app官网 微杏app下载污 考拉直播app下载污 水果视频app官网 69热app下载iOS fi11含羞草app下载iOS 橘子直播app官网 柠檬直播app下载iOS 水果视频app官网 芭乐app下载iOS 小宝贝直播app官网 黄色直播软件app官网 草榴短视频app下载污 f2富二代app下载iOS 69视频app官网 豆奶app下载iOS 仙人掌app下载污 小宝贝直播app下载污 香蕉视频app官网 火辣直播app官网 小姐姐直播app官网 尤蜜视频app下载iOS 秀色小抖音app官网 粉色app下载污 西瓜直播app官网 花粥直播app官网 柚子直播app下载污 压寨直播app下载iOS 小狐仙app下载污 嘿嘿连载app下载污 蘑菇视频app下载iOS 木瓜app官网 一对一直播app下载污 花姬app官网 小花螺直播app下载污 小喵直播app官网 麻豆视频app下载污 本色视频app官网 云雨直播app官网 猛虎视频app下载污 小奶狗app下载iOS 富二代f2app官网 抖阴直播app下载污 小天仙直播app官网 云雨直播app下载污 泡芙视频app官网 ML聚合直播app官网 宅男之家app下载iOS 西瓜直播app下载污 抖阴直播app下载污 光棍影院app下载污 7秒鱼app官网 快狐短视频app下载iOS 蜜蜂视频app下载iOS 富二代f2app下载污 水晶直播app下载污 秀色小抖音app下载污 咪哒app下载iOS 套路直播app官网 秀儿直播app下载iOS 9uuapp官网 九尾狐直播app下载iOS 梦幻直播app下载污 A头条app官网 梦露直播app下载污 小喵直播app下载污 97豆奶视频app下载iOS 水晶直播app下载污 午夜直播间app下载iOS 花心app官网 水晶直播app下载污 豆奶抖音短视频app下载污 杏花直播app下载iOS 酷咪直播app下载iOS 夜遇直播号app下载污 樱花app下载iOS 抖阴视频app官网 小狐仙直播app下载iOS 污直播app官网 污直播app官网 盘她直播app下载污