Recommended: Introduction to commonly used styles in bootstrap4

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Background

I have used bootstrap4 many times recently when doing some small learning projects, so I will organize the bootstrap here for future review. . (Free video course recommendation: bootstrap tutorial)

bootstrap4 installation

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Container and grid system

container container- fluid //Container class The former has a fixed width and the latter has a 100% width

Text layout

display //标题类 1-4
small //小文本
<abbr> //文本底部下面一条虚线边框

Color

text-muted  柔和
text-primary 重要
text-success 成功
text-info 提示
text-warning 警告
text-danger 危险
text-secondary 副标题
text-dark 深灰色文字
text-light 浅灰色
text-white 白色

Form

table  //默认样式
table-striped //条纹表格
table-bordered //边框表格
table-hover //鼠标悬停
table-dark //黑色背景表格
table-responsive //响应式表格

Picture

rounded  //圆角效果
rounded-circle //椭圆效果
img-thumbnail //图片缩略图效果
img-fluid //图片响应式效果
超大屏幕
jumbotron // 屏幕
jumbotron-fluid //没有圆角的全屏幕

Information prompt box

alert-success //成功提示信息
alert-dismissable class="close" data-dismiss="alert" //关闭提示框

Button

btn-primary //主要按钮
btn-secondary //次要按钮
btn-success //成功按钮
btn-info //信息按钮
btn-danger //危险
btn-outline-primary //按钮边框
btn-sm btn-lg //小大号按钮
btn-block //块级按钮
active //可用
disabled //禁用

Button group

btn-group //按钮组
btn-group-lg|sm|xs 控制按钮组大小
btn-group-vertical 垂直按钮组

Progress bar

progress  //添加一个p
progress-bar //在上面的p中添加一个progress-bar的p

Paging

pagination //ul元素上添加
page-item //在li元素上添加page-item

List group

list-group //列表组
list-group-item //列表li
list-group-item-action

Card

card、card-header、card-body、card-footer
card-img-top //图片
card-body、card-title、card-text //图片卡片
card-img-overlay//设置图片为背景

Drop-down menu

dropdown //下拉菜单默认
button设置dropdown-toggle   data-toggle=“dropdown” //下拉button
dropdown-menu //下拉菜单
a设置样式dropdown-item

Navigation bar

navbar、navbar-expand-sm、bg-light
ul：navbar-nav li：nav-item

Form

form-group
label for email
input class form-control

Modal box

button设置 data-toggle="modal" data-target="#myModal"
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Prompt box

data-toggle="tooltip" //创建提示框
title="我是提示内容!" //提示内容
data-placement="top" //指定提示框位置

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