title: iframe shifts 1 pixel to left on some browser sizes
body: <p>i have code like, sorry i dont have the exact code now. but its valid.</p>
  
  <pre><code>&lt;iframe src="..." borderframe="0" scrolling="no" width=728px" height="90px"&gt;&lt;/iframe&gt;
  </code></pre>
  
  <p>the target is a html file that contains code for a banner. 
  everything displays well. but when i resize browser or go to maximize. the content is shiftet to the left by 1 pixel. so the banner is displayed missing the first vertical 1px line. and only 727px is visible.</p>
  
  <p>anyone has an idea?</p>
  
  <p>thank you.</p>