关于CSS应该了解的最基本的东西已经讲过了，从这次开始，通过一个练习来讲解HTML和CSS的更多运用。
首先在上一次的基础上继续完善网站，主要是针对主页lounge进行。先给页面添加一些新内容。代码如下：
<!doctype html><html> <head> <meta charset="utf-8"> <title>Head First Lounge</title> <link type="text/css" rel="stylesheet" href="lounge.css"> </head> <body> <p> <img src="images/logo.gif" alt="Head First Lounge"> </p> <h1>Welcome to the New and ImPRoved Head First Lounge</h1> <p> The Head First Lounge is, no doubt, the biggest trendsetter in Webville. Stop in to sample the eclectic offering of elixirs, teas, and coffees, or, stay a bit longer and enjoy the multicultural culinary menu that combines a harmony of taste, texture, and color with the best in fresh and healthy ingredients. </p> <p> During your stay at the lounge, you'll enjoy a smooth mixture of ambient and mystic sounds, filling the lounge and adding an extra dimension to your dining experience. The decor surrounds you with the relaxing sentiments of sights from eras past. And, don't forget, the lounge offers free wireless access to the Internet, so bring your laptop. </p> <p> Our guarantee: at the lounge, we're committed to providing you, our guest, with an exceptional experience every time you visit. Whether you're just stopping by to check in on email over an elixir, or are here for an out-of-the-ordinary dinner, you'll find our knowledgeable service staff pay attention to every detail. If you're not fully satisfied, have a Blueberry Bliss Elixir on us. </p> <p> But that's not all; at night, join us in the backroom as our resident DJ spins a choice selection of trance and drum&bass beats across our spacious tiki-themed dance floor. Or just hang out in one of our comfy white vinyl booths at the dance bar. You can have your elixirs delivered from the main lounge right to the dance floor. If you've had enough of the beat, just head back to the lounge area to relax. And, no matter where you find yourself in the lounge, you'll always be connected with our wireless Internet access. </p> <p> Now that you've experienced the lounge <em>virtually</em>, isn't it time to check us out <em>for real</em>? We're located right in the heart of Webville, and we've create some <a href="about/directions.html" title="Detailed Directions to the Lounge">detailed directions</a> to get you here in record time. No reservations necessary; come and join us anytime. </p> <h2>Weekly Elixir Specials</h2> <p> <img src="images/yellow.gif" alt="Lemon Breeze Elixir"> </p> <h3>Lemon Breeze</h3> <p> The ultimate healthy drink, this elixir combines herbal botanicals, minerals, and vitamins with a twist of lemon into a smooth citrus wonder that will keep your immune system going all day and all night. </p> <p> <img src="images/chai.gif" alt="Chai Chiller Elixir"> </p> <h3>Chai Chiller</h3> <p> Not your traditional chai, this elixir mixes maté with chai spices and adds an extra chocolate kick for a caffeinated taste sensation on ice. </p> <p> <img src="images/black.gif" alt="Black Brain Brew Elixir"> </p> <h3>Black Brain Brew</h3> <p> Want to boost your memory? Try our Black Brain Brew elixir, made with black oolong tea and just a touch of espresso. Your brain will thank you for the boost. </p> <p> Join us any evening for these and all our other wonderful <a href="beverages/elixir.html" title="Head First Lounge Elixirs">elixirs</a>. </p> <h2>What's playing at the Lounge</h2> <p> We're frequently asked about the music we play at the lounge, and no wonder, it's great stuff. Just for you, we keep a list here on the site, updated weekly. Enjoy. </p> <ul> <!--在网页中增加了一个无序列表<ul>（Unorder List与之相对的是有序列表<ol> Order List--> <li>Buddha Bar, Claude Challe</li> <!--<li>为列表元素List Item）--> <li>When It Falls, Zero 7</li> <li>Earth 7, L.T.J Bukem</li> <li>Le Roi Est Mort, Vive Le Roi!, Enigma</li> <li>Music For Airports, Brian Eno</li> </ul> <p> © 2012, Head First Lounge<br> All trademarks and registered trademarks appearing on this site are the property of their respective owners. </p> </body><html>lounge.html代码这次内容可变化了不少，可以说是大换血。现在网页不但有了自己的logo，文字内容也分为了四部分：主页介绍一直都有（不过内容增加了不少）；下面又添加了一个饮料的介绍；第三部分增加了一个列表（这个是HTML的新内容）；最后是页脚部分，这里包含了版权声明信息。
内容做了改变，网页的外观和配色也随之logo的加入做了重新设计，相应的CSS如下：
body { font-size: small; font-family: Verdana, Helvetica, Arial, sans-serif; /*设置了多种备用字体，以适应不同的客户系统*/ line-height: 1.6em; /*设置了1.6倍的行高*/}h1,h2 { color: #007e7e; /*与logo颜色一致的颜色*/}h1 { font-size: 150%; /*内容字体的150%大*/}h2 { font-size: 130%;}lounge.css代码经过这些修改以后网页效果如图：
先来讲一个知识点，列表。他又分为两个种类，有序列表<ol>，order list；无序列表<ul>，unorder list。他们都在内容中嵌套列表项<li>，list item。所谓有序列表是指其中的列表项是以1、2、3...的序号开头的，而无序列表则是以点号（如上图）或者其他图形符号开头。
网页中还有一个“©”符号（页脚声明版权信息处），在HTML代码中他是以“©”表示的，这种表示特殊字符的方法叫做字符实体，通常用他来表示一些键盘上没有的字符，或者有特殊用途的字符。例如：“<”“>”分别用“<”、“>”表示，因为在HTML中“<”“>”用来标识元素，再作为内容出现会引发歧义。关于字符实体可以通过http://www.Vevbs.com/tags/ref_entities.asp和http://www.unicode.org/charts 进行查询。
现在，网页中HTML的内容已经充实完了，但我们最终要达到的效果如下图：
看来还差得远，需要通过CSS来改变网页的外观。下一次我们就来进行这些操作。
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