Head First HTML with CSS

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a successful strict test One more chance to be strict... You know the game. Ask the validator to give your “lounge.html” file another try. Let’s see if we’re worthy... It works! The big green badge of success. And we’re HTML 4.01 Strict. 250 Chapter 6 Can you say “HTML Superstar?” Oh yeah, bring on that strict 4.01. We’re ready. Is that “bring it on as long as we have Judy around to bail us out?” Come on guys, we’ve gotta figure out what we can and can’t do in HTML 4.01.
Q: Okay, I think I get all this, and it was kind of fun having the validator check my HTML, but SO WHAT? Again, what is all this “compliance” really getting me? A: How does happier customers sound? If you know your HTML is valid, then it’s more likely that your Web pages will work consistently in a wide variety of browsers, which is going to give your Web page users a better experience. There are a few other benefits: Web pages with compliant HTML load faster and work better on other devices that are now being used to surf the Web (like TVs and phones). They’re also more accessible to the visually impaired who are using aural screen readers. Q: So can you explain the error in detail? I want to understand exactly what it means. A: The error was caused by the element not being nested inside a block element. Imagine the browser is reading through your HTML, and sees an element where it expected Exercise there are no Dumb Questions a block element. The first thing it does is say, “Hey, I expected a block element here.” It keeps reading, and then gets to the end of the element (which, since is an empty element, happens as soon as it sees the “>” at the end of the tag) and says, “Hey you can’t be ending an element here because there shouldn’t be an element here to start with.” Also, you might find that you see multiple error messages from one mistake. Just take it one error message at a time, fix your mistake, and you’ll often find you eliminate more than one error message in the process. Q: Are all the validator’s error messages so difficult to understand? A: Generally, yes, the error messages can be a little difficult to decipher. This is a piece of software telling you what is wrong, not a human or a Head First book. Remember, the validator doesn’t know what you meant to do and can only attempt to decipher and indicate errors in what you actually did. Most of the time, it will point you to the right line in your HTML where your error is occurring, which is half the battle. Then standards, compliance, and all that jazz hopefully you’ll spot your mistake. After reading these error messages for a while you’ll start to get the hang of them and often know what they are referring to, even if the validator doesn’t tell you specifically. Q: Why are all the element names listed in that error message in uppercase? I thought element names were written in lowercase. A: Good question. HTML actually allows element names to be uppercase or lowercase, or even mixed case. You could write or even if you wanted. However, the W3C is changing the rules, so in the future element names will all be lowercase. So, while technically the validator for Strict HTML 4.01 still allows (and displays) uppercase tags, we’re only using lowercase so you’ll get into the habit of using only lowercase. This means you won’t have to update your tag names down the road (and that means less work for you). And when we say “down the road,” we actually mean in the next chapter. Your turn. Add the strict DOCTYPE and the tag to “directions.html” and “elixir.html”. Try validating them – do they validate? If not, fix them so that they do. you are here 251
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Head First HTML with CSS and XHTML
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the authors Authors of Head First H
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table of contents x 1 The No pressu
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table of contents xii h2 img h2 h2
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table of contents xiv Here’s a lo
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table of contents xvi 7 Putting I l
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table of contents xx Weekly Elixir
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table of contents xxii 13 tables an
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table of contents xxiv 15 The i Ind
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how to use this book Who is this bo
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how to use this book xxviii intro W
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how to use this book Here’s what
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how to use this book Read Me This i
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the review team Tech Reviewers Lous
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1 getting to know HTML The Language
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What does the Web server do? Web se
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What the browser creates... When th
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Sharpen your pencil You’re closer
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Your big break at Starbuzz Coffee S
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Creating the Starbuzz Web page Of c
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Step four: Change your TextEdit Pre
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Step two: Open Notepad Once you’v
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Meanwhile, back at Starbuzz Coffee.
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Opening your Web page in a browser
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Starbuzz Coffee Beverages House
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Are we there yet? You have an HTML
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Tags dissected... Okay, you’ve se
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Exercise Starbuzz Coffee’s Missio
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Meet the style element To add style
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Cruisin’ with style... It’s tim
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Exercise Now that you’ve put a li
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HTML CSS Right. In fact we’re tot
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6 6 15 6 6 15 14 Across HTMLcross I
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Starbuzz Coffee Beverage
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Exercise Solutions Starbuzz Coffe
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2 going further, with hypertext Mee
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elixir.html A page listing some ref
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2 3 Edit lounge.html Open “lounge
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What does the browser do? 1 First,
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Understanding attributes Attributes
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Attributes Exposed This week’s in
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Label Destination What you write in
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Organizing the lounge... Let’s gi
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I think the problem is that the bro
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3 4 Trace a path from the source to
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Going the other way; linking up int
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Q: What’s a parent folder? If I h
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Finding the path from “elixir.htm
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BULLET POINTS When you want to lin
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It’s time for the competition to
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Exercise Solutions Head First Lou
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Sharpen your pencil Solution “abo
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3 building blocks We better find so
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From Journal to Web site, at 12mph
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From a sketch to an outline Now tha
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Don’t forget, you always need the
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Adding some new elements You have t
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Wait a sec... you removed the doubl
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Five-Minute Mystery The Case of the
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Adding a Let’s get a into Tony
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Solved: The Case of the Elements Se
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there are no Dumb Questions Q: I th
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Inline Block Well, a lot of people
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Exercise Here’s what the changes
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Q: So, the only purpose of is to i
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Remember, it’s important to use t
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Step Two: Enclose your list items w
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Exercise Here’s another list from
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Putting one element inside anoth
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Using nesting to make sure your tag
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A bunch of HTML elements, in full c
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Q: Wow, I never knew the browser co
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BULLET POINTS n n n Rockin’ page.
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Exercise Solutions Here’s the rew
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Top 100 Top 100 Dark Side of the
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Exercise Solutions 9 L 7 B Across 4
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getting on the web Getting Starbuzz
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what’s the goal A Web Detour HELL
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what’s the goal A Web Detour Movi
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what’s the goal A Web Detour As m
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A Web Detour Q: My hosting company
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uniform resource locators Mainstree
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absolute paths to your files What
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easier urls 140 Chapter 4 I’d lik
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142 Chapter 4 Earl needs a little h
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linking to other web pages How do w
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testing those links And now for the
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time for a little mystery Five-Minu
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est practices for your links The ti
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creating destinations Using the el
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linking to a destination anchor Now
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case solved, its all about relative
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targeting windows Opening a new win
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a little brain crossover 160 Chapte
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exercise solutions Sharpen your pen
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exercise solutions Exercise Solutio
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images in your html How the browser
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how browsers load images 3 4 Having
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differences between gif and jpeg He
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when to use gif or jpeg 172 Chapter
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using urls with images : it’s not
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use the alt attribute for accessibi
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a fan site for ipods Creating the u
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inserting an image Sharpen your pen
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all about image sizes Q: What’s w
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choosing a photo editor 184 Chapter
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esizing an image Resizing the image
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using save for web As you can see,
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image saving and quality Save the i
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comparing image settings d 192 Chap
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viewing mypod with resized images T
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using thumbnail images Create the t
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images and layout Take myPod for an
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Sharpen your pencil Color in the el
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Getting the Lounge style into the e
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Linking from “lounge.html” to t
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Test driving the entire lounge... S
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Sharpen your pencil Now that you’
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It’s time to talk about your inhe
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Test drive your new CSS As usual, g
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Test drive Add a rule for the elem
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Adding a class to “elixir.html”
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A greentea test drive Save, and the
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Cool! Yes, that works. One more que
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And if we still don’t have a clea
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CSS XHTML You have to admit XHTML i
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If you have errors in your CSS, usu
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Making sure the Lounge CSS validate
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BULLET POINTS n n n CSS contains si
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Markup Magnets Solution Remember dr
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ody { } font-family: sans-serif; h1
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Who gets the inheritance? h1 and h2
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Exercise Solutions 2 S 11 L E R 3 1
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common text properties Text and fon
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overview of font families What is a
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develop your sense of fonts Bainbri
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improving tony’s journal Dusting
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some fonts questions Test driving T
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how to specify font sizes Adjusting
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using keywords for size 354 Chapter
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setting up tony’s font sizes Let
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some more questions on font size Q:
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using normal weight Test drive the
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using a font style Styling Tony’s
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overview of web colors How do Web c
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the color names 366 Chapter 9 Why d
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using rgb values Specify color in r
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understanding hex codes The two min
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using a photo editor for web colors
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put your hex skills to the test 374
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testing and more hex colors Test dr
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using a border instead of an underl
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a crossword on color 380 Chapter 9
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exercise solutions 382 Chapter 9 Cr
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10 the box model Getting Intimate w
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The music CDs and artists are style
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A very quick test drive Let’s do
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Getting ready for some major renova
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What is the border? Elements can ha
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Padding Margins Our guarantee: at t
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Meanwhile back at the lounge... We
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Creating the guarantee style Let’
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Padding, border, and margins for th
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A test drive with the margin When y
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Wait a sec, it seems like we have t
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Fixing the background image By defa
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Are we there yet? Make sure you sav
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Border Width The border-width prope
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Congratulations! Bravo! You’ve ta
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Head First: An id attribute? I thou
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But how do I use id in CSS? You sel
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Step Three: save your changes and r
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Using multiple style sheets So how
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Q: That’s pretty cool. So I can s
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XHTMLcross the box model You’re r
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Sharpen your pencil Solution Left m
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11 divs and spans Advanced Web Cons
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A close look at the elixirs XHTML A
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Let’s explore how we can divide a
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? brain power On a referral from th
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Q: So, a acts like a container tha
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Taking the for a test drive That w
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Adding some real style to the elixi
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Test driving the width Next, save t
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Well then how do we specify the wid
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Adding the basic styles to the elix
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That’s interesting because I noti
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We’re almost there... We’re clo
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What we need is a way to select des
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Changing the color of the elixir he
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Look what you’ve accomplished...
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But there’s more... Here’s anot
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there are no Dumb Questions Q: Shou
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Jim I was thinking we could just wr
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Step three: styling the s Before we
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Hey guys, I know you think you’re
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How can you style elements based on
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Putting those pseudo-classes to wor
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Isn’t it about time we talk about
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The cascade For this exercise, you
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Q: What makes a specificity number
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Step five: Finally, sort any confli
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Super brain power ?This is a specia
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Sharpen your pencil Solution h1 Her
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Sharpen your pencil Solution Your j
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12 layout and positioning Arranging
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Use the flow, Luke The Flow is what
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What about inline elements? So you
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One more thing you should know abou
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How to float an element Let’s ste
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Behind the scenes at the lounge Now
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The new Starbuzz Let’s take a qui
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layout and positioning from at
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a:link { color: #b76666; text-decor
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I have an idea. In the future, why
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Fixing the two-column problem Are y
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Test drive As usual, save your “s
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Back to clearing up the overlap pro
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Q: Do margins collapse on floated e
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Step One: start with the sidebar We
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Liquid and Frozen Designs All the d
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Test driving with a tank of jello A
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Another example of absolute positio
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Using absolute positioning We’re
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Time for the absolute test drive Ma
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One tradeoff you can make to fix th
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Positioning the award We want the a
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Float Absolute layout and positioni
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Sharpen your pencil Time to put all
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How does fixed positioning work? Co
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Putting the coupon on the page Add
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Getting relative This is it, the la
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To three-columns and beyond... Whil
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XHTMLcross layout and positioning T
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Exercise Solutions Sharpen your pen
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Solution 12 F 5 J 1 V 2 F 3 Z 4 C I
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something new from tony 550 Chapter
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an xhtml table How to create a tabl
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tables up close Tables dissected Yo
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testing you on tables Artist Album
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checking out the unstyled table Tes
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tables and style Now let’s style
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cells and the box model 562 Chapter
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dealing with table borders Getting
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coloring cells How about some color
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using table spans Another look at T
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testing your table knowledge 570 Ch
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we need a nested table Four out of
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testing and improvements Test drivi
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how to override nested styles Overr
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ack to styling lists Giving the lis
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some finer points about styling lis
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some left brain action 582 Chapter
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exercise solutions Exercise Solutio
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exercise solutions Sharpen your pen
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exercise solutions 588 Chapter 13 J
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exercise solutions 1 S 590 Chapter
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owsers and forms How forms work If
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how to write a form What you write
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the form element How the form eleme
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overview of form elements What can
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more form elements What can go in a
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the bean machine Here’s what the
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creating the form Getting ready to
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form element names How form element
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adding input elements Back to getti
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using a select Adding the element
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providing choices ? brain power Cha
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adding checkboxes Exercise 614 Chap
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successful submission The final tes
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match the form names Your informat
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form methods: get and post POST GET
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test yourself, get and post Sharpen
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tabular versus presentation 624 Cha
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deciding how to style forms To Tabl
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the xhtml, continued Ship to: N
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styling the form Styling the form a
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other form elements What more could
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eview of forms 634 Chapter 14 BULLE
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exercise solutions 636 Chapter 14 S
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the end 638 Chapter 14 Congratulati
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specialized selectors #1 More Selec
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splitting your pages #2 Frames HTML
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web tools #4 Tools for Creating Web
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generating pages #6 Server-side Scr
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etter printing with css #8 More abo
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etter looking blogs #10 Blogs Weblo
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the index block elements flow 488-4
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the index CSS (continued) using wit
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the index forms (continued) picking
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the index images (continued) users
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the index No Dumb Questions !import
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the index passwords in forms 633 PD
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the index spanning rows and columns
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the index text, font size (continue
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