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Double Vision – Give the Browsers CSS They Can Digest


Some but not all browsers support CSS2. You can deliberately code your website so that users of either kind of browser will see pages that are appropriate for what their browser can handle. Older browsers won't gag, but you will still be able to take advantage of what you can do with CSS2 in the newer browsers. Read on to find out how.

Author Info:
By: Chris Heilmann
Rating: 5 stars5 stars5 stars5 stars5 stars / 15
February 22, 2005
TABLE OF CONTENTS:
  1. · Double Vision – Give the Browsers CSS They Can Digest
  2. · The way of the dark side – code forking
  3. · The way of confusion – browser hacks
  4. · The way into the future – progressive enhancement
  5. · The child selector
  6. · Enhancing with the child selector
  7. · The screen display style sheet
  8. · The print style sheet

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Double Vision – Give the Browsers CSS They Can Digest - The child selector
(Page 5 of 8 )

It is pretty hard finding useful examples for the child selector, but basically it can save some hassle, for example in the following HTML:

<div>

<p>Content 1</p>

<ul>

    <li><p>Content 2</p></li>

    <li><p>Content 3</p></li>

</ul>

<p>Content 2</p>

</div>

 

We want all the P elements outside the list to have a background, but the ones inside the list to have none.

 

What we could use is: 

div p{background:#036;}

div li p{background:transparent;}

which can be replaced on real CSS2 browsers with:

 

div>p{background:#036;}

 

Adjacent sibling selectors

These selectors allow us to match exactly the next element in the node tree. For example, they allow us to only apply a margin to a paragraph when it is not following another paragraph. If it does follow another paragraph, we won’t apply a margin, but indent the text – much like you do in books: 

p {margin:.5em 0 0 0;}

p+p {margin:0;text-indent:1em;} 


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