title: how do I debug the height of a div/span?
body: <p>I have html like this:</p>
  
  <pre><code>&lt;div&gt;
    &lt;span style="display: inline-block;height:20px"&gt;20&lt;/span&gt;
    &lt;span style="display: inline-block;"&gt;&lt;img src="img/ex.png"/&gt;&lt;/span&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>The image I am importing in the second span is 15x15 pixels</p>
  
  <p>I can check with chrome and I can see that the first img has height 15
  and the second span has height 21. (the first one has height 20 as expected)</p>
  
  <p>can somebody tell me why the second span has height 21 instead of 15 ???</p>
  
  <p>Thanks, it's driving me nuts</p>
  
  <p>I am adding the ode below:</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
    &lt;head&gt;
    &lt;style&gt;
  /* http://meyerweb.com/eric/tools/css/reset/ 
     v2.0 | 20110126
     License: none (public domain)
  */
  
  html, body, div, span, applet, object, iframe,
  h1, h2, h3, h4, h5, h6, p, blockquote, pre,
  a, abbr, acronym, address, big, cite, code,
  del, dfn, em, img, ins, kbd, q, s, samp,
  small, strike, strong, sub, sup, tt, var,
  b, u, i, center,
  dl, dt, dd, ol, ul, li,
  fieldset, form, label, legend,
  table, caption, tbody, tfoot, thead, tr, th, td,
  article, aside, canvas, details, embed, 
  figure, figcaption, footer, header, hgroup, 
  menu, nav, output, ruby, section, summary,
  time, mark, audio, video {
      margin: 0;
      padding: 0;
      border: 0;
      font-size: 100%;
      font: inherit;
      vertical-align: baseline;
  }
  /* HTML5 display-role reset for older browsers */
  article, aside, details, figcaption, figure, 
  footer, header, hgroup, menu, nav, section {
      display: block;
  }
  body {
      line-height: 1;
  }
  ol, ul {
      list-style: none;
  }
  blockquote, q {
      quotes: none;
  }
  blockquote:before, blockquote:after,
  q:before, q:after {
      content: '';
      content: none;
  }
  table {
      border-collapse: collapse;
      border-spacing: 0;
  }
    &lt;/style&gt;
     &lt;/head&gt;
    &lt;body&gt;
  
    &lt;div&gt;
    &lt;span style="display: inline-block;height:20px"&gt;20&lt;/span&gt;
    &lt;span style="display: inline-block;"&gt;&lt;img src="img/ex.png"/&gt;&lt;/span&gt;
    &lt;/div&gt;
  
  
  
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>