JSFiddle - React, Tailwind, and code Playground

HTML

<div id="header">
  <div class="container">
    <div id="photo">
      <img src="http://www.helpmij.nl/forum/attachment.php?attachmentid=202111&d=1389738444" alt="" />
    </div>
  </div>
</div>

CSS

/* reset om te testen */
html,body,div,img {
  margin: 0;
  padding: 0;
  border: 0;
  vertical-align: baseline;
}
body {
  font: normal 100% arial, sans-serif;
}
/* structuur */
#header {
  width: 100%;
  background: #000;
}
.container {
  width: 80%;
  max-width: 900px;
  height:113px;
  margin: 0 auto;
}
#header .container {
  background: #00f; /* blauw om te testen */
}
/*  foto auto-resize */
#photo {
  width: 100%;
}
#photo img {
  width: inherit;
  max-width: 100%;
  height: auto;
}