Awkward Spacing

Code is: `<h3>Timber</h3>
[table id=3 /]
<br style “clear: both;”>

<h3>Rocks</h3>
[table id=4 /]
<br style=”clear: both;”>`

But yet spacing looks odd and weird:

http://images.ashkir.com/users/public/a54518awkwardspacingl177.jpg

How can I fix this?