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CSS Tutorials - How Nested Block Elements Are Formatted

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How Nested Block Elements Are Formatted?

If a block element is nested in another block element, the inner block, child block, will be formatted as the content box of the outer block, parent block. The HTML and CSS document below shows you how nested block elements are formatted:

<style type="text/css">
  H1 {font-size: 20px}
  DIV.page {width: 425px; border: 1px solid black}
  TABLE#out {background-color: #ffdddd}
  TD#box {border: 1px solid black}
  DIV#parent {width: 230px; height: 230px;
    margin: 30px 10px 40px 20px; 
    border: thin solid red;
    padding: 30px 10px 40px 20px; 
    background-color: #ddffdd}
  P#child {width: 200px; height: 200px; 
    border: thin solid blue;
    padding: 30px 10px 40px 20px; 
    font-size: 14px; 
    background-color: #ffffff}
  TD.legend#w30 {height: 32px; background-color: #ffffff}
  TD.legend#g30 {height: 32px; background-color: #dddddd}
</head><body><div class="page">
<H1>Nested Block Elements</H1>
<table id=out><tr>
<td id=box><div id=parent><p id=child>
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<td valign=top><table cellpadding=0 cellspacing=0>
<tr><td class=legend id=w30>- parent margin</td></tr>
<tr><td class=legend id=g30>- parent padding</td></tr>
<tr><td class=legend id=w30>- child padding</td></tr>
<p align="right">By FYIcenter.com</p>

Save this document as nestedBlocks.html, and view it with a browser, you will see how nested block elements are formatted:
            Nested Blocks

(Continued on next topic...)

  1. How Many Ways Can Elements Relate to Each Other?
  2. How In-line Elements Are Formatted Side by Side?
  3. How Nested Block Elements Are Formatted?
  4. How Two Block Elements Are Formatted as a Stack?
  5. How Floating Elements Are Formatted?
  6. Why Is the Top Margin Not Showing?
  7. How Are Vertical Margins between Two Block Elements Collapsed?
  8. How Are Parent Padding Spaces Collapsed with the Child Margins?
  9. How Is the Width of a Parent Element Related to Child Elements?
  10. How Is the Full Width of a Block Element Extended?
  11. How To Test Child Full Width Extension?
  12. How To Test Parent Content Width Extension?
  13. What Are White Spaces in HTML Documents?
  14. How White Spaces Are Formatted?
  15. What Happens to Multiple White Spaces in In-line Elements?

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