Responsive tool for showing me the current browser size : <p>I am looking for a <strong>tool</strong> out there with which I can determine the <strong>current browser size</strong> to find out the <strong>breakpoints</strong> for <strong>responsive design</strong>...</p>

<p>And an other question i´m interesting in is... 
how do you deal with those issues to find your breakpoints doing responive design in HTML/CSS?</p>
