Bootstrap 5 is evolving with each release to better utilize CSS variables for global theme styles, individual components, and even utilities. We provide dozens of variables for colors, font styles, and more at alevel for use anywhere. On components and utilities, CSS variables are scoped to the...
</p> </div> <div class="checkbox"> <label> <input type="checkbox"> Check me out </label> </div> <button type="submit" class="btn btn-default">Submit</button> </form> Don't mix form groups with input groups Do not mix form groups directly with input groups. Instead, nest the...
<formclass=""><divclass="form-group has-success"><labelclass="control-label"for="inputSuccess1">Input with success</label><inputtype="text"class="form-control"id="inputSuccess1"></div><divclass="form-group has-warning"><labelclass="control-label"for="inputWarning1">Input with warning<...
Help text should be explicitly associated with the form control it relates to using the aria-describedby attribute. This will ensure that assistive technologies – such as screen readers – will announce this help text when the user focuses or enters the control. Input with help text A block ...
只有基本的东西:引入了预编译版的 CSS 和 JavaScript 文件,页面只包含了一个container元素。 Bootstrap 主题 加载可选的 Bootstrap 主题,获得增强的视觉体验。 栅格 多个关于栅格布局方面的实例,涉及到层级(tier)、嵌套(nesting)等等。 Jumbotron Build around the jumbotron with a navbar and some basic grid colu...
contains a checkbox. To create this checkbox, the <input> element is styled with the .form-check-input class (instead of the .form-control class applied to the other <input> elements). Lastly, the <label> element comes after the <input> element and is styled with the .form-check-label...
Bootstrap的全局css样式部分 Bootstrap的栅格系统: 1. 为了合适的排列与内补,行(row)写在.container或者.container-fluid中; 在手机上(超小屏幕<768px):总是水平排列的,.container最大宽度自动,类前缀是.col-xs-,最大列宽(column)自动; 在平板上(小屏幕>=768px):开始是堆叠,当大于阙值是为水平排列;....
The most popular HTML, CSS, and JavaScript framework for developing responsive, mobile first projects on the web. - twbs/bootstrap
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Bootstrap Form Example</title> <!-- 引入Bootstrap CSS --> <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap....
Tip: Use Bootstrap's predefined grid classes to align labels and groups of form controls in a horizontal layout.The following example creates a horizontal form with two input fields, one checkbox, and one submit button.Example <form class="form-horizontal" action="/action_page.php"> <div ...