html5中常用的结构标签
article 文章
header 头部
nav 导航
section 区域
aside 侧边栏
hgroup 区块的相关信息
figure 定义一组内容及标题
figcaption 定义figure元素的标题
footer 底部
dialog 对话框
使用习惯：
header/section/footer > aside/article/figure/hgroup/nav > div
embed可插入flash文件，但flash已经逐渐被淘汰，不建议使用
meter状态标签，可以定义电压
optimum是标准状态
low与high之间呈现绿色，其余呈现黄色
<meter value=”220” min=”20” max=”380” low=”200” high=”240” optimum=”220”></meter>
自动计算百分比
<meter value="0.75">75%</meter>
有步长的进度条
<progress value="30" max="100"></progress>
不断加载的进度条
<progress max="100"></progress>
datalist为input定义下拉列表
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>demo</title>
</head>
<body>
<input placeholder="请选择手机品牌" list="phoneList">
<datalist id="phoneList">
<option value="iphone">iphone</option>
<option value="samsung">samsung</option>
<option value="huawei">huawei</option>
<option value="oppo">oppo</option>
<option value="htc">htc</option>
</datalist>
</body>
</html>
专门建立的学习Q-q-u-n： 784783012 ，分享学习的方法和需要注意的小细节，不停更新最新的教程和学习技巧
（从零基础开始到前端项目实战教程，学习工具，全栈开发学习路线以及规划）
details定义元素的详细内容，配合summary
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>demo</title>
</head>
<body>
<details>
<summary>HTML5</summary>
<p>HTML5是构建Web内容的一种语言描述方式。HTML5是互联网的下一代标准，是构建以及呈现互联网内容的一种语言方式．被认为是互联网的核心技术之一。HTML产生于1990年，1997年HTML4成为互联网标准，并广泛应用于互联网应用的开发。
HTML5是Web中核心语言HTML的规范，用户使用任何手段进行网页浏览时看到的内容原本都是HTML格式的，在浏览器中通过一些技术处理将其转换成为了可识别的信息。HTML5在从前HTML4.01的基础上进行了一定的改进，虽然技术人员在开发过程中可能不会将这些新技术投入应用，但是对于该种技术的新特性，网站开发技术人员是必须要有所了解的。 [1-2] </p>
</details>
</body>
</html>
ruby和rt进行拼音的注释
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>demo</title>
</head>
<body> 我们来<ruby>夼<rt>kuang</rt></ruby>一个话题 </body>
</html>
兼容浏览器的写法：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>demo</title>
</head>
<body> 我们来<ruby>夼<rp>(</rp><rt>Kuang</rt><rp>)</rp></ruby>一个话题 </body>
</html>
mark黄色选中效果
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>demo</title>
</head>
<body>
<p>妈妈叫我回家的时候顺路买一盒<mark>牛奶</mark>，需要很新鲜的那种。</p>
</body>
</html>
output表单计算
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>demo</title>
</head>
<body>
<form oninput="sum.value=parseInt(num1.value)*parseInt(num2.value)">
<input type="number" id="num1">* <input type="number" id="num2">= <output name="sum" for="num1 num2"></output>
</form>
</body>
</html>
date pickers在移动端效果比较好
week兼容性不好
datetime兼容性不好，推荐用datetime-local
time用来设置时间（小时和分钟）；
month用来设置年和月；
date用来设置年月日；
datetime用来设置年月日和时间；
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>demo</title>
</head>
<body> email:<input type="email" name="email"><br> url:<input type="url" name="url"><br> tel:<input type="tel" name="tel"><br> number:<input type="number" name="number"><br> date:<input type="date" name="date"><br> month:<input type="month" name="month"><br> week:<input type="week" name="week"><br> time:<input type="time" name="time"><br> datetime:<input type="datetime" name="datetime"><br> datetime-local:<input type="datetime-local" name="datetime-local"><br> range:<input type="range" name="range" min="1" max="10"><br> search:<input type="search" name="search"><br> color:<input type="color" name="color"><br>
</body>
</html>
专门建立的学习Q-q-u-n： 784783012 ，分享学习的方法和需要注意的小细节，不停更新最新的教程和学习技巧
（从零基础开始到前端项目实战教程，学习工具，全栈开发学习路线以及规划）
autocomplete属性规定form或input域拥有自动完成功能，该属性适用于标签和标签
autofocus自动获取焦点
multiple多选，适用于email和file，email中不同邮箱用,隔开
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>demo</title>
</head>
<body>
<form action="lesson2_1 autocomplete.html" autocomplete="on">
<input type="text" name="text" autofocus="autofocus" placeholder="您好，请在这里输入您的用户名！"><br>
<input type="email" name="email" autocomplete="off" multiple="multiple"><br>
<input type="file" name="file" multiple="multiple"><br>
<input type="submit">
</form>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>demo</title>
<link rel="icon" href="icon.gif" type="image/gif" sizes="16x16">
<base href="http://localhost" target="_blank">
</head>
<body>
</body>
</html>
script:
defer 页面已完成加载后再执行脚本
async 一旦脚本可用，则异步执行
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>demo</title>
<script async="async" type="text/javascript" src="async.js"></script>
<script defer="defer" type="text/javascript" src="defer.js"></script>
</head>
<body>
</body>
</html>
ol有序列表倒序
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Ol</title>
</head>
<body>
<ol start="2" reversed="reversed">
<li>Html</li>
<li>Html5</li>
<li>Css</li>
<li>Css3</li>
<li>JavaScript</li>
</ol>
</body>
</html>
html页面布局demo:
demo.html
----------------------------------------
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>html5</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<header>
<div class="container">
<a href="index.html"><img src="images/logo.png"></a>
<nav>
<a class="active" href="index.html">Home</a>
<a href="#">Course</a>
<a href="#">Actual</a>
<a href="#">Plan</a>
<a href="#">FAQ</a>
<a href="#">Notes</a>
</nav>
</div>
</header>
<section class="banner">
<ul>
<li class="active"><img src="images/banner/banner1.jpg"></li>
<li class="left"><img src="images/banner/banner3.jpg"></li>
<li class="right"><img src="images/banner/banner2.jpg"></li>
</ul>
</section>
<section class="main">
<aside>
<h1>Recent <samp>Course</samp></h1>
<dl>
<dt>Hyper Text Markup Language</dt>
<dd><img src="images/Course/05_05.png"></dd>
<dd>HTML is the standard markup language used to create web pages and its elements form the building blocks of all websites.</dd>
</dl>
<dl>
<dt>Cascading Style Sheets</dt>
<dd><img src="images/Course/06_04.png"></dd>
<dd>Cascading Style Sheets (CSS) is a simple mechanism for adding style (e.g., fonts, colors, spacing) to Web documents.</dd>
</dl>
<dl>
<dt>JavaScript</dt>
<dd><img src="images/Course/09_07.png"></dd>
<dd>JavaScript is a high-level, dynamic, untyped, and interpreted programming language.</dd>
</dl>
<dl>
<dt>AngularJS</dt>
<dd><img src="images/Course/02_09.png"></dd>
<dd>AngularJS is an open-source web application framework mainly maintained by Google and by a community of individuals and...</dd>
</dl>
</aside>
<article>
<h1>Welcome to <samp>Massive Open Online Course!</samp></h1>
<p>We provide the latest knowledge to help you cope with the changing world!</p>
<img src="images/article.jpg">
<p>We hope that all the students who love the Internet can be more convenient access to learning resources, using the Internet thinking to change our learning.</p>
<p>Focus on IT skills education MOOC, consistent with the development trend of the Internet down to earth's MOOC. We are free, we only teach useful, we concentrate on education.</p>
</article>
</section>
<footer>
<div class="container">
<p>Copyright 
2019 test.com All Rights Reserved.</p>
<span>
<img src="images/icon/weichat.png">
<img src="images/icon/sina.png">
<img src="images/icon/qq.png">
</span>
</div>
</footer>
</body>
</html>
专门建立的学习Q-q-u-n： 784783012 ，分享学习的方法和需要注意的小细节，不停更新最新的教程和学习技巧
（从零基础开始到前端项目实战教程，学习工具，全栈开发学习路线以及规划）
style.css
------------------------------------------
/* All tag */
* { font-family: Arial; font-size: 14px; margin: 0; padding: 0; border: none; }
a { text-decoration: none; }
ul { list-style: none; }
/* header */
header { position: relative; height: 80px; background: #000; }
header:after { position: absolute; bottom: 0; left: 0; width: 100%; height: 7px; content: ''; background: #d6d6d6; }
header > .container { position: relative; z-index: 1; width: 1200px; margin: 0 auto; }
header > .container > a { display: block; float: left; margin: 5px 25px; }
header > .container > nav { float: right; }
/* nav */
nav > a { font-size: 24px; line-height: 73px; display: block; float: left; width: 110px; height: 73px; text-align: center; color: #fff; }
nav > a:nth-child(1) { background: #433b90; }
nav > a:nth-child(2) { background: #017fcb; }
nav > a:nth-child(3) { background: #78b917; }
nav > a:nth-child(4) { background: #feb800; }
nav > a:nth-child(5) { background: #f27c01; }
nav > a:nth-child(6) { background: #d40112; }
nav > a:hover,
nav > a.active { padding-bottom: 7px; }
/* banner */
.banner { position: relative; background: #eaeaea; }
.banner:after { position: absolute; bottom: 0; left: 0; width: 100%; height: 6px; content: ''; background: #d6d6d6; }
.banner > ul { position: relative; width: 1490px; height: 538px; margin: 0 auto; padding-top: 10px; }
.banner > ul > li { position: absolute; width: 610px; height: 300px; overflow: hidden; }
.banner > ul > li.active { z-index: 2; top: 37px; right: 0; left: 0; width: 960px; height: 460px; margin: auto; border: 1px solid #fff; box-shadow: 0 30px 140px 22px rgba(0, 0, 0, .35); }
.banner > ul > li.left { z-index: 1; top: 0; bottom: 0; left: 0; margin: auto; box-shadow: 0 3px 7px 0 rgba(0, 0, 0, .35); }
.banner > ul > li.right { z-index: 1; top: 0; right: 0; bottom: 0; margin: auto; box-shadow: 0 3px 7px 0 rgba(0, 0, 0, .35); }
.banner > ul > li > img { position: absolute; left: -30%; height: 100%; }
/* main */
.main { position: relative; width: 1200px; height: 473px; margin: 34px auto 0; }
.main h1 { font-size: 30px; font-weight: lighter; margin-bottom: 23px; }
.main h1 > samp { font-size: 30px; color: #7c7c7c; }
.main > aside { float: left; width: 450px; }
.main > aside > dl { position: relative; display: block; height: 74px; margin-bottom: 17px; }
.main > aside > dl > dt { position: absolute; top: -1px; left: 92px; font-size: 16px; font-weight: bold; line-height: 16px; text-decoration: underline; }
.main > aside > dl > dd:first-of-type { position: absolute; left: 0; }
.main > aside > dl > dd:last-of-type { position: absolute; top: 20px; left: 90px; }
.main > article { float: right; width: 720px; overflow: hidden; }
.main > article > p,
.main > article > img { margin-bottom: 20px; }
/* footer */
footer { position: relative; background: #000; }
footer:before { position: absolute; z-index: -1; top: -6px; left: 0; width: 100%; height: 6px; content: ''; background: #d6d6d6; }
footer > .container { width: 1200px; height: 64px; margin: 0 auto; }
footer > .container > p { line-height: 64px; float: left; color: #fff; }
footer > .container > span { float: right; margin: 14px 40px; }
footer > .container > span > img { margin-left: 4px; opacity: .7; }
footer > .container > span > img:hover { opacity: 1; cursor: pointer; }
html页面布局demo2:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>html</title>
<link rel="stylesheet" href="demo.css">
</head>
<body>
<table id="outer-table">
<!-- 顶部 -->
<thead>
<tr>
<td><img src="img/logo.png" alt="logo"></td>
</tr>
</thead>
<!-- 主体 -->
<tbody>
<tr>
<td>
<table>
<tr>
<!-- 左侧 -->
<td width="12%">
<p class="left-p">
<span>商品管理</span><br>
<span>评价管理</span><br>
<span>咨询管理</span><br><br><br>
<span><b>全部订单</b></span><br>
<span>已完成订单</span><br>
<span>待处理订单</span><br>
<span>今日物流</span><br><br><br>
<span>月考核</span><br>
<span>季度考核</span><br>
<span>年度考核</span><br>
</p>
</td>
<!-- 右侧 -->
<td width="88%">
<table class="inner-table">
<tr>
<td><span>全部订单</span></td>
</tr>
</table>
<table class="inner-table">
<tr>
<td>
<span> 查询： <input type="date">至 <input type="date">
</span>
</td>
</tr>
</table>
<table id="order" class="inner-table" rules="all">
<tr>
<td colspan="2">宝贝信息</td>
<td>订单数量</td>
<td>单价</td>
<td>买家</td>
<td>下单时间</td>
<td>实付款</td>
<td>订单操作</td>
</tr>
<tr>
<td><img src="img/txue.png"></td>
<td>2019新款个性男女潮牌&暮春之行文化衫</td>
<td>2</td>
<td>120</td>
<td>小明</td>
<td>2019-2-21 21:54</td>
<td>240</td>
<td>待付款</td>
</tr>
<tr>
<td><img src="img/txue.png"></td>
<td>2019新款个性男女潮牌&暮春之行文化衫</td>
<td>2</td>
<td>120</td>
<td>小明</td>
<td>2019-2-21 21:54</td>
<td>240</td>
<td>待付款</td>
</tr>
<tr>
<td><img src="img/txue.png"></td>
<td>2019新款个性男女潮牌&暮春之行文化衫</td>
<td>2</td>
<td>120</td>
<td>小明</td>
<td>2019-2-21 21:54</td>
<td>240</td>
<td>待付款</td>
</tr>
<tr>
<td><img src="img/txue.png"></td>
<td>2019新款个性男女潮牌&暮春之行文化衫</td>
<td>2</td>
<td>120</td>
<td>小明</td>
<td>2019-2-21 21:54</td>
<td>240</td>
<td>待付款</td>
</tr>
<tr>
<td><img src="img/txue.png"></td>
<td>2019新款个性男女潮牌&暮春之行文化衫</td>
<td>2</td>
<td>120</td>
<td>小明</td>
<td>2019-2-21 21:54</td>
<td>240</td>
<td>待付款</td>
</tr>
<tr>
<td><img src="img/txue.png"></td>
<td>2019新款个性男女潮牌&暮春之行文化衫</td>
<td>2</td>
<td>120</td>
<td>小明</td>
<td>2019-2-21 21:54</td>
<td>240</td>
<td>待付款</td>
</tr>
<tr>
<td><img src="img/txue.png"></td>
<td>2019新款个性男女潮牌&暮春之行文化衫</td>
<td>2</td>
<td>120</td>
<td>小明</td>
<td>2019-2-21 21:54</td>
<td>240</td>
<td>待付款</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
</tbody>
<!-- 页脚 -->
<tfoot>
<tr>
<td><span>2019-12-29 ©test.com</span></td>
</tr>
</tfoot>
</table>
</body>
</html>
专门建立的学习Q-q-u-n： 784783012 ，分享学习的方法和需要注意的小细节，不停更新最新的教程和学习技巧
（从零基础开始到前端项目实战教程，学习工具，全栈开发学习路线以及规划）
demo.css
-----------------------------------
*{margin:0;padding:0;}
table{width:100%;background-color: #fff;}
#outer-table{background-color: #abcdef;}
#outer-table tfoot td{text-align:center;height:50px;line-height: 50px;}
#outer-table img{width: 150px;margin-left: 10px;}
.left-p{margin-left:10px;margin-top:-250px;}
.left-p span{line-height:2em;}
.inner-table{border:2px solid #ccc;}
.inner-table tr td{padding:10px;}
#order tr td{text-align:center;}
#order tr td img{width:50px;}
