Tabs not resizing properly for sortables

I have the following script:

http://jsfiddle.net/oshirowanen/mYx5y/3/

Why is the height of the tab w开发者_运维百科hich contains the sortable elements not resizing it's height properly to contain all the sortable elements?

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The column element within the tabs are floated and needs a clear after so the tabs div is the right height.

A quick fix would just be to use clearfix. use the following css:

.clearfix:after { content: "."; display: block; height: 0; clear: both; visibility: hidden; }

.clearfix { display: inline-block; }

* html .clearfix { height: 1%; } /* Hides from IE-mac \*/

.clearfix { display: block; }

and give the div with id="tabs" a class="clearfix"