通过应用这些类,div元素将在水平方向上居中对齐。 此外,如果还需要在垂直方向上居中,可以在长矩形容器的父元素上应用d-flex和align-items-center类,如下所示: 代码语言:html 复制 <divclass="container d-flex align-items-center"><divclass="row"><divclass="col-md-6 d-flex justify-content-center"><!
Turn any fixed-width grid layout into a full-width layout by changing your outermost .container to .container-fluid. <div class="container-fluid"> <div class="row"> ... </div> </div> Example: Mobile and desktop Don't want your columns to simply stack in smaller devices? Use the ext...
<div class="d-flex flex-column align-items-center"> <div class="row flex-fill justify-content-sm-center w-100 "> <div class="col-md-10 col-lg-8 col-12"> <!DOCTYPE html><html><head><metacharset="utf-8"/><metaname="viewport"content="width=device-width, initial-scale=1.0"><tit...
<h2 class="text-center">文本居中对齐</h2> <h2 class="text-left">文本左对齐</h2> <h2 class="text-right">文本右对齐</h2> <!-- 间距 --> <div class="p-3 bg-dark text-white">.p-3; padding 所有边</div> <div class="mt-5">.mt-5; margin-top</div> <div class="mb-3">....
align-items-start 顶部对齐 align-items-center 中间对齐 align-items-end 底部对齐 <div class="container"> <div class="row align-items-start"> <div class="col">One of three columns </div> <div class="col">One of three columns </div> ...
Target elements that are not :visible according to jQuery will be ignored and their corresponding nav items will never be highlighted. 需要相对定位(relative positioning) 无论何种实现方式,滚动监听都需要被监听的组件是 position: relative; 即相对定位方式。大多数时候是监听 <body> 元素。When scrollspying...
<form> <div class="form-row align-items-center"> <div class="col-auto"> <label class="sr-only" for="inlineFormInput">Name</label> <input type="text" class="form-control mb-2" id="inlineFormInput" placeholder="Jane Doe"> </div> <div class="col-auto"> <label class="sr-only...
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante. Someone famous inSource Title <blockquote class="pull-right"> ... </blockquote> Lists Unordered A list of items in which the order doesnotexplicitly matter. ...
警告框(alert)示例</div></div><divclass="alert alert-danger d-flex align-items-center"role="alert"><svgclass="bi flex-shrink-0 me-2"role="img"aria-label="Danger:"><usexlink:href="#exclamation-triangle-fill"/></svg><div>A一个带有图标的、表示危险的警告框(alert)示例</div></div>...
<divclass="p-2 bg-primary">Flex item 3</div> </div> Try it Yourself » Justify Content Use the.justify-content-*classes to change the alignment of flex items. Valid classes arestart(default),end,center,betweenoraround: Example