css/css-values/calc-width-block-1-ref.html

<!DOCTYPE HTML>
<html>
<head>
  <title>CSS Reference: width: calc() and min-width: calc() on blocks</title>
  <link rel="author" title="L. David Baron" href="https://dbaron.org/">
<style type="text/css">

body { width: 500px }
p { background: green; color: white; margin: 1px 0; font-size: 10px }

</style>
</head>
<body>

<p style="width: 247px">50% - 3px</p>
<p style="width: 247px">25% - 3px + 25%</p>
<p style="width: 247px">25% - 3px + 12.5% * 2</p>
<p style="width: 247px">25% - 3px + 12.5%*2</p>
<p style="width: 247px">25% - 3px + 2*12.5%</p>
<p style="width: 247px">25% - 3px + 2 * 12.5%</p>
<p style="width: 250px">30% + 20%</p>
</body>
</html>