block-level text before floats
first float*inline-level text after the floats
To test manually, drag from the middle of the 'first float' div to the right, into the space before the inline-level box. The selection should go to the end of the first float element with a portion of the inline-level box's background and not jump to the beginning.

SUCCESS: Selected test is 'float*' as expected
| <div>
|   "block-level text before floats"
| <div>
|   id="target"
|   style="float: left; margin-right: 20px"
|   "first <#selection-anchor>float*"
| "<#selection-focus>inline-level text after the floats"