By default, <h3>
elements have a top and bottom margin. You should remove them using margin: 0
:
<div style="width: 250px;">
<img style="float: left; width: 20px;" src="public/_images/ok_kutu.jpg" alt="kutu" />
<h3 style="float: left; width: 50px; color: #FFF; font-size: 18px;margin:0">Jobs</h3>
<div style="clear: left;"></div>
</div>
Also, maybe look into using external CSS, rather than placing all of your style information inline. It will be much easier to maintain in the long run...
Please see this jsFiddle demo
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