We need to instate a vertical scrollbar for overflow text of a div. The problem is when we set the height to 100% and overflow to auto, it expands beyond its parent container because of another sibling div preceding it. Here开发者_JAVA技巧 is an example:
<style type="text/css">
.container {height: 100px; width: 100px; border: solid;}
.titlebar {height: 2em; background: gray;}
.app-body {height: 100%; overflow: auto; background: lightblue;}
</style>
...
<div class="container">
<div class="titlebar"></div>
<div class="app-body">Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Donec condimentum pretium nisl.</div>
</div>
app-body
set to 100% causes it to have a height of 100px which makes it overflow beyond the bottom of container
by 2em
. We tried not using a height at all for app-body
but that causes it to overflow without the scrollbar displayed.
I know we could set the height to a smaller percentage or a fixed number of pixels but that will cause problems for us if the font size changes. If a height of 100% - 2em
was valid then that would be effectively what we are trying to define.
Try this, setting the app-body positioning to absolute and then fixed the top to 3em and the rest to 0:
<style type="text/css">
.container {height: 100px; width: 100px; border: solid;
position: relative;}
.titlebar {height: 2em; background: gray;
position: relative;}
.app-body {height: auto; overflow: auto; background: lightblue;
position: absolute; top: 2em; left: 0; right: 0; bottom: 0;}
</style>
PS: Above tested on FF3.6, IE8, Webkit browsers.
You can set the overflow value for .container
to hidden
like so:
<style type="text/css">
.container {height: 100px; width: 100px; border: solid;overflow: hidden;}
</style>
Hope this helps
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