What causes the iframe to protrude beyond the bottom of the page when set to 100% height?

I am facing an issue with an iframe on my website that is contained within a div. I have specified both to have a height of 100%, and I am using the blueprint framework, hence applying the class span-12 last. Despite these settings, a scroll bar still appears on the site.

CODE:

<div id="friend_pane" style="background-color: #FF0000;height: 100%;" class="span-12 last">
<iframe id="friendpane_area" style="width: 515px; height: 100%" src="http://friendsconnect.org/friendpane/shell.php" frameborder="0" allowTransparency="true"></iframe>
</div>

The displayed content extends beyond the bottom of the page rather than fitting the available space, resulting in a scroll bar being present. Why is the iframe assuming this height?

SNAPSHOT:

The iframe within the red-bordered div.

cssiframehtml

Answer №1

If you're looking to adjust the display of your iframe, consider starting with html { height: 100% }. From there, you can experiment with the following options:

iframe { overflow:hidden; }

Alternatively, you could try implementing the following iframe code:

<iframe id="friendpane_area" style="width: 515px; height: 100%; overflow: hidden" scrolling="no" src="http://friendsconnect.org/friendpane/shell.php" frameborder="0" allowTransparency="true"></iframe>

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