【Java EE】Day11 BootStrap、响应式布局、栅格系统、CSS样式、案例

一、BootStrap介绍

https://v3.bootcss.com/css/#overview

1、概念

  • 基于三剑客开发的前端开发框架
  • 定义了许多css样式和js插件,从而得到丰富的页面效果
  • 依赖于栅格系统实现响应式布局(设备兼容)

2、快速入门 

  • 下载并将样式、字体和插件导入项目根目录
  • 在html中引入资源文件bootstrap.min.css

二、响应式布局

1、栅格系统

  • 一行12个格,可以指定元素占几个格子
  • 步骤:
    • 定义容器:container(留白)、container-fluid(100%宽度)
    • 定义行,使用row
    • 定义元素并指定所占格子数目
      • CSS的class:col-设备代号-格子数目(1~12)
      • 设备代号:xs,sm,md,lg(笑死me了)
 <style>
        /*<!-- 定义css类选择器 -->*/
        .inner{
            border:1px solid red;
        }
    </style>
</head>
<body>
    <!--1.定义容器-->
    <div class="container-fluid">
        <!--2.定义行-->
        <div class="row">
            <!--3.定义元素,一行有12个格子
            目的:在大的显示器一行12个格子
            在pad上,一行6个格子,放不下会自动换行-->
            <div class="col-lg-1 col-sm-2 inner">栅格</div>
            <div class="col-lg-1 col-sm-2 inner">栅格</div>
            <div class="col-lg-1 col-sm-2 inner">栅格</div>
            <div class="col-lg-1 col-sm-2 inner">栅格</div>
            <div class="col-lg-1 col-sm-2 inner">栅格</div>
            <div class="col-lg-1 col-sm-2 inner">栅格</div>
            <div class="col-lg-1 col-sm-2 inner">栅格</div>
            <div class="col-lg-1 col-sm-2 inner">栅格</div>
            <div class="col-lg-1 col-sm-2 inner">栅格</div>
            <div class="col-lg-1 col-sm-2 inner">栅格</div>
            <div class="col-lg-1 col-sm-2 inner">栅格</div>
            <div class="col-lg-1 col-sm-2 inner">栅格</div>
        </div>
    </div>
  • 超过12自动换行

3、全局CSS样式

  • 按钮:class="btn btn-default"
  • 图片:class="img-responsive",响应式图片
  • 图片形状:方形img-rounded、圆形img-circle、相框img-thumbnail
  • 表格:table-bordered边框,table-hover悬浮
  • 表单:class="form-control"控制,所有表单项位于class="form-group"中
  • 其他组件:导航栏、分页条、轮播图 

三、案例:黑马旅游网

<html lang="zh-CN">
<head>
    <!--固定的meta写法,浏览器支持、设备宽度设置-->
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! -->
    <title>Bootstrap HelloWorld</title>

    <!-- Bootstrap -->
    <!--验证是否写对,可以按住ctrl,看有没有小手-->
    <link href="css/bootstrap.min.css" rel="stylesheet">

    <script src="js/jquery-3.2.1.min.js"></script>
    <script src="js/bootstrap.min.js"></script>
    <style>
        .paddtop{
            padding-top: 10px;
        }
        .search_btn{
            float: left;
            border:2px solid #ffc900;
            width:60px;
            height: 35px;
            background-color: #ffc900;
            text-align: center;
            line-height: 35px;
            margin-top: 15px;
        }
        .search_input{
            float: left;
            border:2px solid #ffc900;
            width:400px;
            height: 35px;
            padding-left:5px;
            margin-top: 15px;
        }
        .jx{
            border-bottom: 2px solid #ffc900;
            padding: 5px;
        }
        .company{
            height:40px;
            background-color: #ffc900;
            text-align: center;
            line-height: 40px;
            /*?????*/
            font-size: 8px;
        }
    </style>
</head>
<body>
    <!--页眉100%,内容留白,页脚100%-->
    <!--1.页眉部分-->
    <!--使用h5的语义化标签-->
    <header class="container-fluid">
        <!--4行-->
        <div class="row">
            <img src="img/top_banner.jpg" alt="" class="img-responsive">
        </div>
        <div class="row paddtop" >
            <div class="col-md-3">
                <img src="img/logo.jpg" alt="" class="img-responsive">
            </div>
            <div class="col-md-5">
                <input type="text" class="search_input" placeholder="请输入线路名称">
                <a href="#" class="search_btn">搜索</a>
            </div>
            <div class="col-md-4"> <img src="img/hotel_tel.png" alt="" class="img-responsive"></div>
        </div>
        <!--导航栏-->
        <div class="row">
            <nav class="navbar navbar-default">
                <div class="container-fluid">
                    <!-- Brand and toggle get grouped for better mobile display -->
                    <div class="navbar-header">
                        <!-- 定义汉堡按钮 -->
                        <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
                            <span class="sr-only">Toggle navigation</span>
                            <!-- 定义线的样式-->
                            <span class="icon-bar"></span>
                            <span class="icon-bar"></span>
                            <span class="icon-bar"></span>
                        </button>
                        <!-- 发给logo-->
                        <a class="navbar-brand" href="#">首页</a>
                    </div>

                    <!-- Collect the nav links, forms, and other content for toggling -->
                    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
                        <ul class="nav navbar-nav">
                            <li class="active"><a href="#">Link <span class="sr-only">(current)</span></a></li>
                            <li><a href="#">Link</a></li>
                            <li><a href="#">Link</a></li>
                            <li><a href="#">Link</a></li>
                            <li><a href="#">Link</a></li>
                            <li><a href="#">Link</a></li>
                            <li><a href="#">Link</a></li>

                        </ul>

                    </div><!-- /.navbar-collapse -->
                </div><!-- /.container-fluid -->
            </nav>



        </div>
        <div class="row">
            <div id="carousel-example-generic" class="carousel slide" data-ride="carousel">
                <!-- Indicators -->
                <ol class="carousel-indicators">
                    <li data-target="#carousel-example-generic" data-slide-to="0" class="active"></li>
                    <li data-target="#carousel-example-generic" data-slide-to="1"></li>
                    <li data-target="#carousel-example-generic" data-slide-to="2"></li>
                </ol>
                <!-- Wrapper for slides -->
                <div class="carousel-inner" role="listbox">
                    <div class="item active">
                        <img src="img/banner_1.jpg" alt="...">
                        <div class="carousel-caption">
                            ...
                        </div>
                    </div>
                    <div class="item">
                        <img src="img/banner_2.jpg" alt="...">
                        <div class="carousel-caption">
                            兵马俑
                        </div>
                    </div>

                    <div class="item">
                        <img src="img/banner_3.jpg" alt="...">
                        <div class="carousel-caption">
                            ...
                        </div>
                    </div>
                    ...
                </div>

                <!-- Controls -->
                <a class="left carousel-control" href="#carousel-example-generic" role="button" data-slide="prev">
                    <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
                    <span class="sr-only">Previous</span>
                </a>
                <a class="right carousel-control" href="#carousel-example-generic" role="button" data-slide="next">
                    <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
                    <span class="sr-only">Next</span>
                </a>
            </div>
        </div>
    </header>
    <!--2.主体部分-->
    <div class="container">
        <div class="row jx">
            <img src="img/icon_5.jpg" alt="">
            <span>黑马精选</span>
        </div>
        <div class="row paddtop">
            <div class="col-md-3">
                <!--相框-->
                <div class="thumbnail">
                    <img src="img/jiangxuan_1.jpg" alt="">
                    <p>
                        上海直飞三亚五天四晚自由行(春节销售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)
                    </p>
                    <font color="red">&yen; 899</font>
                </div>
            </div>
            <div class="col-md-3">
                <div class="thumbnail">
                    <img src="img/jiangxuan_1.jpg" alt="">
                    <p>
                        上海直飞三亚五天四晚自由行(春节销售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)
                    </p>
                    <font color="red">&yen; 899</font>
                </div>
            </div>
            <div class="col-md-3">
                <div class="thumbnail">
                    <img src="img/jiangxuan_1.jpg" alt="">
                    <p>
                        上海直飞三亚五天四晚自由行(春节销售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)
                    </p>
                    <font color="red">&yen; 899</font>
                </div>
            </div>
            <div class="col-md-3">
                <div class="thumbnail">
                    <img src="img/jiangxuan_1.jpg" alt="">
                    <p>
                        上海直飞三亚五天四晚自由行(春节销售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)
                    </p>
                    <font color="red">&yen; 899</font>
                </div>
            </div>
        </div>
        <div class="row jx">
            <img src="img/icon_6.jpg" alt="">
            <span>国内游</span>
        </div>
        <!--一行分两个格子-->
        <div class="row paddtop">
            <div class="col-md-4">
                <img src="img/guonei_1.jpg" alt="">
            </div>
            <div class="col-md-8">
                <div class="row">
                    <div class="col-md-4">
                        <div class="thumbnail">
                            <img src="img/jiangxuan_1.jpg" alt="">
                            <p>
                                上海直飞三亚五天四晚自由行(春节销售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)
                            </p>
                            <font color="red">&yen; 899</font>
                        </div>
                    </div>
                    <div class="col-md-4">
                        <div class="thumbnail">
                            <img src="img/jiangxuan_1.jpg" alt="">
                            <p>
                                上海直飞三亚五天四晚自由行(春节销售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)
                            </p>
                            <font color="red">&yen; 899</font>
                        </div>
                    </div>
                    <div class="col-md-4">
                        <div class="thumbnail">
                            <img src="img/jiangxuan_1.jpg" alt="">
                            <p>
                                上海直飞三亚五天四晚自由行(春节销售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)
                            </p>
                            <font color="red">&yen; 899</font>
                        </div>
                    </div>
                </div>
                <div class="row">
                    <div class="col-md-4">
                        <div class="thumbnail">
                            <img src="img/jiangxuan_1.jpg" alt="">
                            <p>
                                上海直飞三亚五天四晚自由行(春节销售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)
                            </p>
                            <font color="red">&yen; 899</font>
                        </div>
                    </div>
                    <div class="col-md-4">
                        <div class="thumbnail">
                            <img src="img/jiangxuan_1.jpg" alt="">
                            <p>
                                上海直飞三亚五天四晚自由行(春节销售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)
                            </p>
                            <font color="red">&yen; 899</font>
                        </div>
                    </div>
                    <div class="col-md-4">
                        <div class="thumbnail">
                            <img src="img/jiangxuan_1.jpg" alt="">
                            <p>
                                上海直飞三亚五天四晚自由行(春节销售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)
                            </p>
                            <font color="red">&yen; 899</font>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
    <!--3.页脚部分-->
    <footer class="container-fluid">
        <div class="row">
            <img src="img/footer_service.png" alt="" class="img-responsive">
        </div>
        <div class="row company">
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posted @ 2021-06-13 22:37  哥们要飞  阅读(110)  评论(0编辑  收藏  举报