请解释<link rel="" href="" type="">
时间: 2023-12-04 20:41:38 浏览: 24
`<link>` 标签定义文档与外部资源之间的关系。`<link>` 标签通常用于链接样式表,但也可以用于创建站点图标(favicon.ico)等。`<link>` 标签是空标签,意味着它没有结束标签。`<link>` 标签具有三个属性:`rel`、`href` 和 `type`。其中,`rel` 属性规定当前文档与被链接文档之间的关系,`href` 属性规定被链接文档的 URL,`type` 属性规定被链接文档的类型。例如,下面的代码将一个名为 `theme.css` 的样式表文件链接到 HTML 文档中:
```html
<link rel="stylesheet" type="text/css" href="theme.css">
```
相关问题
帮我找出这段代码的错误并给出正确答案<html> <head> <meta charset="utf-8" /> <link rel="stylesheet" type="text/css" href="css/style.css" /> <title>学生成绩管理系统</title> </head> <body> <h1>学生成绩管理系统</h1> <form action="./server/user_server.php" method="post"> <table> <tr> <td>用户名: </td> <td><input type="text" name="account"></td> </tr> <tr> <td>密码: </td> <td><input type="password" name="password"></td> </tr> <tr> <td><button type="submit">登录</button></td> <td> <span> <?php echo isset($_GET['message']) ? $_GET['message'] : ""; ?> </span> </td> </tr> </table> </form> </body> </html>
这段代码的错误是在第 18 行,缺少了右括号")"。正确答案如下所示:
```html
<html>
<head>
<meta charset="utf-8" />
<link rel="stylesheet" type="text/css" href="css/style.css" />
<title>学生成绩管理系统</title>
</head>
<body>
<h1>学生成绩管理系统</h1>
<form action="./server/user_server.php" method="post">
<table>
<tr>
<td>用户名: </td>
<td><input type="text" name="account"></td>
</tr>
<tr>
<td>密码: </td>
<td><input type="password" name="password"></td>
</tr>
<tr>
<td><button type="submit">登录</button></td>
<td>
<span>
<?php echo isset($_GET['message']) ? $_GET['message'] : ""; ?>
</span>
</td>
</tr>
</table>
</form>
</body>
</html>
```
帮我补充这段代码<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>外卖订餐网站首页</title> <link rel="stylesheet" href="css/style.css"> </head> <body> <header> <div class="logo"> <img src="logo.png" alt="网站Logo"> </div> <nav> <ul> <li><a href="#">首页</a></li> <li><a href="#">菜单</a></li> <li><a href="#">关于我们</a></li> <li><a href="#">联系我们</a></li> </ul> </nav> </header> <div class="banner"> <img src="banner.jpg" alt="轮播图"> </div> <section class="featured-dishes"> <h2>推荐菜品</h2> <ul> <li> <img src="dish1.jpg" alt="菜品图片"> <h3>菜品名称</h3> <p>菜品描述</p> <span class="price">¥50</span> </li> <li> <img src="dish2.jpg" alt="菜品图片"> <h3>菜品名称</h3> <p>菜品描述</p> <span class="price">¥60</span> </li> <li> <img src="dish3.jpg" alt="菜品图片"> <h3>菜品名称</h3> <p>菜品描述</p> <span class="price">¥70</span> </li> </ul> </section> <section class="order-form"> <h2>下单</h2> <form> <label for="name">姓名</label> <input type="text" id="name"> <label for="phone">电话</label> <input type="tel" id="phone"> <label for="address">地址</label> <input type="text" id="address"> <label for="dish">菜品</label> <select id="dish"> <option value="1">菜品1</option> <option value="2">菜品2</option> <option value="3">菜品3</option> </select> <button type="submit">提交订单</button> </form> </section> <footer> <p>©2021 外卖订餐网站. All Rights Reserved.</p> </footer> </body> </html>添加左边导航栏和广告浮动窗口,请给我html和css的源代码
以下是添加左边导航栏和广告浮动窗口的 HTML 和 CSS 源代码:
HTML 代码:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>外卖订餐网站首页</title>
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<header>
<div class="logo">
<img src="logo.png" alt="网站Logo">
</div>
<nav>
<ul>
<li><a href="#">首页</a></li>
<li><a href="#">菜单</a></li>
<li><a href="#">关于我们</a></li>
<li><a href="#">联系我们</a></li>
</ul>
</nav>
<div class="left-nav">
<ul>
<li><a href="#">热销</a></li>
<li><a href="#">折扣</a></li>
<li><a href="#">新品</a></li>
</ul>
</div>
</header>
<div class="banner">
<img src="banner.jpg" alt="轮播图">
</div>
<section class="featured-dishes">
<h2>推荐菜品</h2>
<ul>
<li>
<img src="dish1.jpg" alt="菜品图片">
<h3>菜品名称</h3>
<p>菜品描述</p>
<span class="price">¥50</span>
</li>
<li>
<img src="dish2.jpg" alt="菜品图片">
<h3>菜品名称</h3>
<p>菜品描述</p>
<span class="price">¥60</span>
</li>
<li>
<img src="dish3.jpg" alt="菜品图片">
<h3>菜品名称</h3>
<p>菜品描述</p>
<span class="price">¥70</span>
</li>
</ul>
</section>
<section class="order-form">
<h2>下单</h2>
<form>
<label for="name">姓名</label>
<input type="text" id="name">
<label for="phone">电话</label>
<input type="tel" id="phone">
<label for="address">地址</label>
<input type="text" id="address">
<label for="dish">菜品</label>
<select id="dish">
<option value="1">菜品1</option>
<option value="2">菜品2</option>
<option value="3">菜品3</option>
</select>
<button type="submit">提交订单</button>
</form>
</section>
<div class="ad">
<img src="ad.jpg" alt="广告图片">
</div>
<footer>
<p>©2021 外卖订餐网站. All Rights Reserved.</p>
</footer>
</body>
</html>
CSS 代码:
/* 左边导航栏样式 */
.left-nav {
position: fixed;
top: 40%;
left: 0;
transform: translateY(-50%);
width: 100px;
text-align: center;
}
.left-nav ul {
list-style: none;
margin: 0;
padding: 0;
}
.left-nav li {
margin-bottom: 10px;
}
.left-nav li a {
display: block;
background-color: #f9f9f9;
color: #333;
padding: 10px;
border-radius: 5px;
text-decoration: none;
}
.left-nav li a:hover {
background-color: #333;
color: #fff;
}
/* 广告浮动窗口样式 */
.ad {
position: fixed;
top: 50%;
right: 10px;
transform: translateY(-50%);
}
.ad img {
display: block;
width: 200px;
height: 200px;
border-radius: 50%;
box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.5);
}