Tryit Editor v2.9

Edit This Code:
<!DOCTYPE html>
<html>
<head>
<style>
p {
    font-size: 16px;
    line-height: 2em;
}

div {
    font-size: 30px;
    border: 1px solid black;
}

span {
    font-size: 0.5em;
}
</style>
</head>
<body>

<p>These paragraphs have a calculated line-height of: 2x16px = 32px.</p>
<p>These paragraphs have a calculated line-height of: 2x16px = 32px.</p>
<p>These paragraphs have a calculated line-height of: 2x16px = 32px.</p>
<div>The font-size of the div element is set to 30px. <span>The span element inside the div element has a font-size of 0.5em, which equals to 0.5x30 = 15px</span>.</div>

</body>
</html>