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使用Bootstrap搭首页

月白色的大狒 2022-04-01 阅读 35
bootstrap

一，实现首页轮播图

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>案例1:实现首页轮播图</title>
		<!-- 一如Bootatrap的CSS -->
		<link rel="stylesheet" type="text/css" href="css/bootstrap.css" />
		<!-- 支持手机端 -->
		<meta name="viewport"
			content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
		<style type="text/css">
			<style>.navbar-collapse {
				flex-grow: 0;/*1代表弹性扩大占用父容器剩余空间 设置为0表示不占用  在固定容器中*/
			}
			.ss {
				background-color: #DBDBDA;/* 背景颜色 */
				height: 100px;	/* 高度 */
				margin-top: 20px;/* 上间距 */
				
			}
			.form-group {
				width: 300px;/* 宽度 */
				margin-top: 31px;/* 上间距 */
				margin-left: auto;/* 左边距自适应 自动 */
				margin-right: auto;/* 右边距自适应 自动 */
			}
		</style>
		</style>
	</head>
	<body>
		<!-- 导航条组件 -->
		<nav class="navbar navbar-expand-lg navbar-light bg-light">
			<!-- 固定容器 -->
			<div class="container">
				<a class="navbar-brand" href="#">你好,欢迎来到小袁废品回收站</a>
				<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav"
					aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
					<span class="navbar-toggler-icon"></span>
				</button>
				<div class="collapse navbar-collapse" id="navbarNav">
					<ul class="navbar-nav">
						<li class="nav-item active">
							<a class="nav-link" href="#">首页<span class="sr-only">(current)</span></a>
						</li>
						<li class="nav-item">
							<a class="nav-link" href="#">登录</a>
						</li>
						<li class="nav-item">
							<a class="nav-link" href="#">注册</a>
						</li>
						<li class="nav-item">
							<a class="nav-link">我的购物车</a>
						</li>
					</ul>
				</div>
			</div>
		</nav>
		<!-- 大致思路: 
			第一行 搜索区域
			第二行
				左3 书籍分类
				右9
					上为轮播图
					下位新书上架-以及热门书籍
		 -->
		<!-- 固定容器 栅格系统-->
		<div class="container">
			<!-- 第一行 -->
			<div class="row ss">
				<div class="col">
					<!-- 搜索区域 -->
					<!-- 表单组件 -->
					<form>
						<div class="form-group">
							<!-- 输入框组组件 -->
							<div class="input-group mb-3">
								<input type="text" class="form-control" placeholder="书籍名"
									aria-label="Recipient's username" aria-describedby="button-addon2">
								<div class="input-group-append">
									<button class="btn btn-primary" type="button" id="button-addon2">查询</button>
								</div>
							</div>

						</div>
					</form>
				</div>
			</div>

			<!-- 第二行 -->
			<div class="row" style="background-color: skyblue;">
				<div class="col-3">
					书籍分类
				</div>

				<div class="col-9" style="background-color: greenyellow;">
					<div class="row">
						<div class="col">
							<!-- 上轮播图 -->
							
							<div id="carouselExampleIndicators" class="carousel slide" data-ride="carousel">
							  <ol class="carousel-indicators">
							    <li data-target="#carouselExampleIndicators" data-slide-to="0" class="active"></li>
							    <li data-target="#carouselExampleIndicators" data-slide-to="1"></li>
							    <li data-target="#carouselExampleIndicators" data-slide-to="2"></li>
								<li data-target="#carouselExampleIndicators" data-slide-to="3"></li>
							  </ol>
							  <div class="carousel-inner">
							    <div class="carousel-item active">
							      <img src="img/lb1.png" class="d-block w-100" alt="...">
							    </div>
							    <div class="carousel-item">
							      <img src="img/lb2.jpg" class="d-block w-100" alt="...">
							    </div>
							    <div class="carousel-item">
							      <img src="img/lb3.jpg" class="d-block w-100" alt="...">
							    </div>
								<div class="carousel-item">
								  <img src="img/lb4.jpeg" class="d-block w-100" alt="...">
								</div>
							  </div>
							  <button class="carousel-control-prev" type="button" data-target="#carouselExampleIndicators" data-slide="prev">
							    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
							    <span class="sr-only">Previous</span>
							  </button>
							  <button class="carousel-control-next" type="button" data-target="#carouselExampleIndicators" data-slide="next">
							    <span class="carousel-control-next-icon" aria-hidden="true"></span>
							    <span class="sr-only">Next</span>
							  </button>
							</div>
							
						</div>
					</div>

					<div class="row" style="background-color: deeppink;">
						<div class="col">
							下新书上架-热门书籍
						</div>
					</div>
				</div>
			</div>

		</div>
		<!-- 一如JQuery的类库 -->
		<script src="js/jquery-3.3.1.js" type="text/javascript" charset="utf-8"></script>
		<!-- 引入Bootstrap的类库 -->
		<script src="js/bootstrap.js" type="text/javascript" charset="utf-8"></script>
	</body>
</html>

1.1效果图：

1.2使用的Bootatrap组件中的轮播: 

 

二，实现书籍分类 

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>案例2:首页书籍分类实现</title>
		<!-- 一如Bootatrap的CSS -->
		<link rel="stylesheet" type="text/css" href="css/bootstrap.css" />
		<!-- 支持手机端 -->
		<meta name="viewport"
			content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
		<style type="text/css">
			<style>.navbar-collapse {
				flex-grow: 0;/*1代表弹性扩大占用父容器剩余空间 设置为0表示不占用  在固定容器中*/
			}
			.ss {
				background-color: #DBDBDA;/* 背景颜色 */
				height: 100px;	/* 高度 */
				margin-top: 20px;/* 上间距 */
				
			}
			.form-group {
				width: 300px;/* 宽度 */
				margin-top: 31px;/* 上间距 */
				margin-left: auto;/* 左边距自适应 自动 */
				margin-right: auto;/* 右边距自适应 自动 */
			}
		</style>
		</style>
	</head>
	<body>
		<!-- 导航条组件 -->
		<nav class="navbar navbar-expand-lg navbar-light bg-light">
			<!-- 固定容器 -->
			<div class="container">
				<a class="navbar-brand" href="#">你好,欢迎来到小袁废品回收站</a>
				<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav"
					aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
					<span class="navbar-toggler-icon"></span>
				</button>
				<div class="collapse navbar-collapse" id="navbarNav">
					<ul class="navbar-nav">
						<li class="nav-item active">
							<a class="nav-link" href="#">首页<span class="sr-only">(current)</span></a>
						</li>
						<li class="nav-item">
							<a class="nav-link" href="#">登录</a>
						</li>
						<li class="nav-item">
							<a class="nav-link" href="#">注册</a>
						</li>
						<li class="nav-item">
							<a class="nav-link">我的购物车</a>
						</li>
					</ul>
				</div>
			</div>
		</nav>
		<!-- 大致思路: 
			第一行 搜索区域
			第二行
				左3 书籍分类
				右9
					上为轮播图
					下位新书上架-以及热门书籍
		 -->
		<!-- 固定容器 栅格系统-->
		<div class="container">
			<!-- 第一行 -->
			<div class="row ss">
				<div class="col">
					<!-- 搜索区域 -->
					<!-- 表单组件 -->
					<form>
						<div class="form-group">
							<!-- 输入框组组件 -->
							<div class="input-group mb-3">
								<input type="text" class="form-control" placeholder="书籍名"
									aria-label="Recipient's username" aria-describedby="button-addon2">
								<div class="input-group-append">
									<button class="btn btn-primary" type="button" id="button-addon2">查询</button>
								</div>
							</div>

						</div>
					</form>
				</div>
			</div>

			<!-- 第二行 -->
			<div class="row" style="background-color: skyblue;">
				<div class="col-3">
					<!-- 书籍分类 -->
					
					<div class="list-group">
					  <button type="button" class="list-group-item list-group-item-action active" aria-current="true">
					    书籍分类
					  </button>
					  <button type="button" class="list-group-item list-group-item-action">军事</button>
					  <button type="button" class="list-group-item list-group-item-action">言情</button>
					  <button type="button" class="list-group-item list-group-item-action">科幻</button>
					  <button type="button" class="list-group-item list-group-item-action">动作</button>
					  <button type="button" class="list-group-item list-group-item-action">科技</button>
					  <button type="button" class="list-group-item list-group-item-action">教育</button>
					  <button type="button" class="list-group-item list-group-item-action">社会</button>
					  <button type="button" class="list-group-item list-group-item-action">计算机技术</button>
					  <button type="button" class="list-group-item list-group-item-action">文艺</button>
					  <button type="button" class="list-group-item list-group-item-action">励志</button>
					  <button type="button" class="list-group-item list-group-item-action">青春</button>
					</div>
					
				</div>

				<div class="col-9" style="background-color: greenyellow;">
					<div class="row">
						<div class="col">
							上轮播图
						</div>
					</div>

					<div class="row" style="background-color: deeppink;">
						<div class="col">
							下新书上架-热门书籍
						</div>
					</div>
				</div>
			</div>

		</div>
		<!-- 一如JQuery的类库 -->
		<script src="js/jquery-3.3.1.js" type="text/javascript" charset="utf-8"></script>
		<!-- 引入Bootstrap的类库 -->
		<script src="js/bootstrap.js" type="text/javascript" charset="utf-8"></script>
	</body>
</html>

2.1效果图：

2.2使用的Bootstrap组件中的列表组:

 

三，实现新书上架和热门书籍

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>案例3:首页新书上架&热门书籍实现</title>
		<!-- 一如Bootatrap的CSS -->
		<link rel="stylesheet" type="text/css" href="css/bootstrap.css" />
		<!-- 支持手机端 -->
		<meta name="viewport"
			content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
		<style type="text/css">
			<style>.navbar-collapse {
				flex-grow: 0;/*1代表弹性扩大占用父容器剩余空间 设置为0表示不占用  在固定容器中*/
			}
			.ss {
				background-color: #DBDBDA;/* 背景颜色 */
				height: 100px;	/* 高度 */
				margin-top: 20px;/* 上间距 */
				
			}
			.form-group {
				width: 300px;/* 宽度 */
				margin-top: 31px;/* 上间距 */
				margin-left: auto;/* 左边距自适应 自动 */
				margin-right: auto;/* 右边距自适应 自动 */
			}
			/* 画像 */
			.figure{
				/* 文字水平居中 */
				text-align: center;
			}
		</style>
		</style>
	</head>
	<body>
		<!-- 导航条组件 -->
		<nav class="navbar navbar-expand-lg navbar-light bg-light">
			<!-- 固定容器 -->
			<div class="container">
				<a class="navbar-brand" href="#">你好,欢迎来到小袁废品回收站</a>
				<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav"
					aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
					<span class="navbar-toggler-icon"></span>
				</button>
				<div class="collapse navbar-collapse" id="navbarNav">
					<ul class="navbar-nav">
						<li class="nav-item active">
							<a class="nav-link" href="#">首页<span class="sr-only">(current)</span></a>
						</li>
						<li class="nav-item">
							<a class="nav-link" href="#">登录</a>
						</li>
						<li class="nav-item">
							<a class="nav-link" href="#">注册</a>
						</li>
						<li class="nav-item">
							<a class="nav-link">我的购物车</a>
						</li>
					</ul>
				</div>
			</div>
		</nav>
		<!-- 大致思路: 
			第一行 搜索区域
			第二行
				左3 书籍分类
				右9
					上为轮播图
					下位新书上架-以及热门书籍
		 -->
		<!-- 固定容器 栅格系统-->
		<div class="container">
			<!-- 第一行 -->
			<div class="row ss">
				<div class="col">
					<!-- 搜索区域 -->
					<!-- 表单组件 -->
					<form>
						<div class="form-group">
							<!-- 输入框组组件 -->
							<div class="input-group mb-3">
								<input type="text" class="form-control" placeholder="书籍名"
									aria-label="Recipient's username" aria-describedby="button-addon2">
								<div class="input-group-append">
									<button class="btn btn-primary" type="button" id="button-addon2">查询</button>
								</div>
							</div>

						</div>
					</form>
				</div>
			</div>

			<!-- 第二行 -->
			<div class="row" style="background-color: skyblue;">
				<div class="col-3">
					书籍分类
				</div>

				<div class="col-9" style="background-color: greenyellow;">
					<div class="row">
						<div class="col">
							上轮播图
						</div>
					</div>
					
					<!-- 下新书上架-热门书籍 -->
					<div class="row">
						<div class="col">
							<figure class="figure">
							  <img src="img/1.png" class="figure-img img-fluid rounded" alt="...">
							  <figcaption class="figure-caption">冷间谍</figcaption>
							</figure>
						</div>
						<div class="col">
							<figure class="figure">
							  <img src="img/8.png" class="figure-img img-fluid rounded" alt="...">
							  <figcaption class="figure-caption">时光</figcaption>
							</figure>
						</div>
						<div class="col">
							<figure class="figure">
							  <img src="img/2.png" class="figure-img img-fluid rounded" alt="...">
							  <figcaption class="figure-caption">第一商会</figcaption>
							</figure>
						</div>
						<div class="col">
							<figure class="figure">
							  <img src="img/3.png" class="figure-img img-fluid rounded" alt="...">
							  <figcaption class="figure-caption">红人日记</figcaption>
							</figure>
						</div>
						<div class="col">
							<figure class="figure">
							  <img src="img/9.png" class="figure-img img-fluid rounded" alt="...">
							  <figcaption class="figure-caption">阿凡达</figcaption>
							</figure>
						</div>
					</div>
					
					<div class="row">
						<div class="col">
							<figure class="figure">
							  <img src="img/pic_c10.png" class="figure-img img-fluid rounded" alt="...">
							  <figcaption class="figure-caption">六度人脉</figcaption>
							</figure>
						</div>
						<div class="col">
							<figure class="figure">
							  <img src="img/pic_c3.png" class="figure-img img-fluid rounded" alt="...">
							  <figcaption class="figure-caption">奇迹</figcaption>
							</figure>
						</div>
						<div class="col">
							<figure class="figure">
							  <img src="img/pic_c6.png" class="figure-img img-fluid rounded" alt="...">
							  <figcaption class="figure-caption">舌尖上的中国</figcaption>
							</figure>
						</div>
						<div class="col">
							<figure class="figure">
							  <img src="img/pic_c8.png" class="figure-img img-fluid rounded" alt="...">
							  <figcaption class="figure-caption">奇迹</figcaption>
							</figure>
						</div>
						<div class="col">
							<figure class="figure">
							  <img src="./img/4.png" class="figure-img img-fluid rounded" alt="...">
							  <figcaption class="figure-caption">半自动运算</figcaption>
							</figure>
						</div>
					</div>
				</div>
			</div>

		</div>
		<!-- 一如JQuery的类库 -->
		<script src="js/jquery-3.3.1.js" type="text/javascript" charset="utf-8"></script>
		<!-- 引入Bootstrap的类库 -->
		<script src="js/bootstrap.js" type="text/javascript" charset="utf-8"></script>
	</body>
</html>

3.1 效果图：

3.2使用Bootstrap页面布局中的画像：

 

 四，整合首页面

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>首页整合</title>
		<!-- 一如Bootatrap的CSS -->
		<link rel="stylesheet" type="text/css" href="css/bootstrap.css" />
		<!-- 支持手机端 -->
		<meta name="viewport"
			content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
		<style type="text/css">
			<style>.navbar-collapse {
				flex-grow: 0;/*1代表弹性扩大占用父容器剩余空间 设置为0表示不占用  在固定容器中*/
			}
			.ss {
				background-color: #DBDBDA;/* 背景颜色 */
				height: 100px;	/* 高度 */
				margin-top: 20px;/* 上间距 */
				
			}
			.form-group {
				width: 300px;/* 宽度 */
				margin-top: 31px;/* 上间距 */
				margin-left: auto;/* 左边距自适应 自动 */
				margin-right: auto;/* 右边距自适应 自动 */
			}
			/* 画像 */
			.figure{
				/* 文字水平居中 */
				text-align: center;
				margin-top: 20px;
			}
			/* 书籍分类 */
			.list-group{
				margin-top: 30px;/* 上间距 */
			}
			/* 轮播图 */
			#carouselExampleIndicators{
				margin-top: 30px;/* 上间距 */
			}
			/* 轮播图 指示灯*/
			.carousel-indicators li{
				background-color: blue;/* 背景颜色 */
			}
			/* 新书上架 热门书籍样式*/
			.xxx{
				/* 背景图片 */
				background-image: url(img/title_bj.png);
				/* 不平铺 */
				background-repeat: no-repeat;
				/* 字体颜色 */
				color: white;
				/* 外上间距 */
				margin-top: 20px;
				/* 字体大小 */
				font-size: 20px;
				/* 内左间距 */
				padding-left: 15px;
			}
		</style>
	</head>
	<body>
		<!-- 导航条组件 -->
		<nav class="navbar navbar-expand-lg navbar-light bg-light">
			<!-- 固定容器 -->
			<div class="container">
				<a class="navbar-brand" href="#">你好,欢迎来到小袁废品回收站</a>
				<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav"
					aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
					<span class="navbar-toggler-icon"></span>
				</button>
				<div class="collapse navbar-collapse" id="navbarNav">
					<ul class="navbar-nav">
						<li class="nav-item active">
							<a class="nav-link" href="#">首页<span class="sr-only">(current)</span></a>
						</li>
						<li class="nav-item">
							<a class="nav-link" href="#">登录</a>
						</li>
						<li class="nav-item">
							<a class="nav-link" href="#">注册</a>
						</li>
						<li class="nav-item">
							<a class="nav-link">我的购物车</a>
						</li>
					</ul>
				</div>
			</div>
		</nav>
		<!-- 大致思路: 
			第一行 搜索区域
			第二行
				左3 书籍分类
				右9
					上为轮播图
					下位新书上架-以及热门书籍
		 -->
		<!-- 固定容器 栅格系统-->
		<div class="container">
			<!-- 第一行 -->
			<div class="row ss">
				<div class="col">
					<!-- 搜索区域 -->
					<!-- 表单组件 -->
					<form>
						<div class="form-group">
							<!-- 输入框组组件 -->
							<div class="input-group mb-3">
								<input type="text" class="form-control" placeholder="书籍名"
									aria-label="Recipient's username" aria-describedby="button-addon2">
								<div class="input-group-append">
									<button class="btn btn-primary" type="button" id="button-addon2">查询</button>
								</div>
							</div>

						</div>
					</form>
				</div>
			</div>

			<!-- 第二行 -->
			<div class="row">
				<div class="col-3">
					<!-- 书籍分类 -->
					<div class="list-group">
					  <button type="button" class="list-group-item list-group-item-action active" aria-current="true">
					    书籍分类
					  </button>
					  <button type="button" class="list-group-item list-group-item-action">军事</button>
					  <button type="button" class="list-group-item list-group-item-action">言情</button>
					  <button type="button" class="list-group-item list-group-item-action">科幻</button>
					  <button type="button" class="list-group-item list-group-item-action">动作</button>
					  <button type="button" class="list-group-item list-group-item-action">科技</button>
					  <button type="button" class="list-group-item list-group-item-action">教育</button>
					  <button type="button" class="list-group-item list-group-item-action">社会</button>
					  <button type="button" class="list-group-item list-group-item-action">计算机技术</button>
					  <button type="button" class="list-group-item list-group-item-action">文艺</button>
					  <button type="button" class="list-group-item list-group-item-action">励志</button>
					  <button type="button" class="list-group-item list-group-item-action">青春</button>
					</div>
				</div>

				<div class="col-9" >
					<div class="row">
						<div class="col">
							<!-- 上轮播图 -->
							<div id="carouselExampleIndicators" class="carousel slide" data-ride="carousel">
							  <ol class="carousel-indicators">
							    <li data-target="#carouselExampleIndicators" data-slide-to="0" class="active"></li>
							    <li data-target="#carouselExampleIndicators" data-slide-to="1"></li>
							    <li data-target="#carouselExampleIndicators" data-slide-to="2"></li>
								<li data-target="#carouselExampleIndicators" data-slide-to="3"></li>
							  </ol>
							  <div class="carousel-inner">
							    <div class="carousel-item active">
							      <img src="img/lb1.png" class="d-block w-100" alt="...">
							    </div>
							    <div class="carousel-item">
							      <img src="img/lb2.jpg" class="d-block w-100" alt="...">
							    </div>
							    <div class="carousel-item">
							      <img src="img/lb3.jpg" class="d-block w-100" alt="...">
							    </div>
								<div class="carousel-item">
								  <img src="img/lb4.jpeg" class="d-block w-100" alt="...">
								</div>
							  </div>
							  <button class="carousel-control-prev" type="button" data-target="#carouselExampleIndicators" data-slide="prev">
							    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
							    <span class="sr-only">Previous</span>
							  </button>
							  <button class="carousel-control-next" type="button" data-target="#carouselExampleIndicators" data-slide="next">
							    <span class="carousel-control-next-icon" aria-hidden="true"></span>
							    <span class="sr-only">Next</span>
							  </button>
							</div>
						</div>
					</div>
					<div class="xxx">新书上架</div>
					<div class="row" >
						<div class="col">
							<!-- 下新书上架-热门书籍 -->
							<figure class="figure">
								  <img src="img/1.png" class="figure-img img-fluid rounded" alt="...">
								  <figcaption class="figure-caption">冷间谍</figcaption>
								</figure>
							</div>
							<div class="col">
								<figure class="figure">
								  <img src="img/8.png" class="figure-img img-fluid rounded" alt="...">
								  <figcaption class="figure-caption">时光</figcaption>
								</figure>
							</div>
							<div class="col">
								<figure class="figure">
								  <img src="img/2.png" class="figure-img img-fluid rounded" alt="...">
								  <figcaption class="figure-caption">第一商会</figcaption>
								</figure>
							</div>
							<div class="col">
								<figure class="figure">
								  <img src="img/3.png" class="figure-img img-fluid rounded" alt="...">
								  <figcaption class="figure-caption">红人日记</figcaption>
								</figure>
							</div>
							<div class="col">
								<figure class="figure">
								  <img src="img/9.png" class="figure-img img-fluid rounded" alt="...">
								  <figcaption class="figure-caption">阿凡达</figcaption>
								</figure>
							</div>
						</div>
						<div class="xxx">热门书籍</div>
						<div class="row">
							<div class="col">
								<figure class="figure">
								  <img src="img/pic_c10.png" class="figure-img img-fluid rounded" alt="...">
								  <figcaption class="figure-caption">六度人脉</figcaption>
								</figure>
							</div>
							<div class="col">
								<figure class="figure">
								  <img src="img/pic_c3.png" class="figure-img img-fluid rounded" alt="...">
								  <figcaption class="figure-caption">奇迹</figcaption>
								</figure>
							</div>
							<div class="col">
								<figure class="figure">
								  <img src="img/pic_c6.png" class="figure-img img-fluid rounded" alt="...">
								  <figcaption class="figure-caption">舌尖上的中国</figcaption>
								</figure>
							</div>
							<div class="col">
								<figure class="figure">
								  <img src="img/pic_c8.png" class="figure-img img-fluid rounded" alt="...">
								  <figcaption class="figure-caption">奇迹</figcaption>
								</figure>
							</div>
							<div class="col">
								<figure class="figure">
								  <img src="./img/4.png" class="figure-img img-fluid rounded" alt="...">
								  <figcaption class="figure-caption">半自动运算</figcaption>
								</figure>
							</div>
						</div>
					</div>
				</div>
			</div>

		</div>
		<!-- 一如JQuery的类库 -->
		<script src="js/jquery-3.3.1.js" type="text/javascript" charset="utf-8"></script>
		<!-- 引入Bootstrap的类库 -->
		<script src="js/bootstrap.js" type="text/javascript" charset="utf-8"></script>
	</body>
</html>

4.1效果图：

 

 【注：  案例4是整合前3个案例运用到一起】

五：简单登录

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>案例5：登录</title>
		<style type="text/css">
			form{
				width: 300px;/* 宽度 */
				margin-left: auto;/* 左右自适应 */
				margin-right: auto;
				margin-top: 200px;
			}
			form button{
				width: 300px;
			}
		</style>
		<!-- 引入Bootstrap的css(层叠样式) -->
		<link rel="stylesheet" type="text/css" href="css/bootstrap.css"/>
		<!-- 支持手机端 -->
		<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
	</head>
	<body style="text-align: center;">
		<form>
			<h2>用户登录</h2>
		  <div class="form-group">
		    <label for="exampleInputEmail1"></label>
		    <input type="email" class="form-control" id="exampleInputEmail1" aria-describedby="emailHelp">
		    <small id="emailHelp" class="form-text text-muted"></small>
		  </div>
		  <div class="form-group">
		    <label for="exampleInputPassword1"></label>
		    <input type="password" class="form-control" id="exampleInputPassword1">
		  </div>
		  <div class="form-group form-check">
		    <input type="checkbox" class="form-check-input" id="exampleCheck1">
		    <label class="form-check-label" for="exampleCheck1">@Remember me</label>
		  </div>
		  <button type="submit" class="btn btn-primary">登录</button>
		  <div class="form-group">
			  <br />
		    <label class="form-check-label" for="exampleCheck1">&copy;2017-2022</label>
		  </div>
		</form>
		<!-- 引入JQuery库 -->
		<script src="js/jquery-3.3.1.js" type="text/javascript" charset="utf-8"></script>
		<!-- 引入Bootstrap的类库 -->
		<script src="js/bootstrap.js" type="text/javascript" charset="utf-8"></script>
	</body>
</html>

5.1效果图 ：

5.2运用Bootstrap组件中的From 

 

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