HTML - Div inside of Div

Placing <div> elements inside of other <div> elements allows these elements to be further subdivided.

HTML Div Subdivision:

<div id="myDiv" name="myDiv" title="Example Div Element" style="font-family: 

Helvetica; font-size: 12pt; border: 1px solid black;">
  <div id="subDiv1" name="subDiv1" title="Subdivision Div Element" 

style="color: #FF0000; border: 1px dotted black;">
    <h5>Section 1</h5>
    <p>This paragraph would be your content paragraph...</p>
    <p>Here's another content article right here.</p>
  </div>
  <br />
  <div id="subDiv2" name="subDiv2" title="Subdivision Div Element"

 style="color: #FF00FF;border: 1px dashed black;">
    <h5>Section 2</h5>
    <p>This paragraph would be your content paragraph...</p>
    <p>Here's another content article right here.</p>
  </div>
</div>

Divs Inside of Divs:

Section 1 This paragraph would be your content paragraph... Here's another content article right here.

Section 2 This paragraph would be your content paragraph... Here's another content article right here.

This concept is the foundation of which most web pages are now built. HTML documents that are properly divided and subdivided are easy to maintain and modify.