<iframe attribute-name="attribute-value"></iframe> Name Value Description height non-negative integer Vertical dimension name browsing-context name Valid browsing context name sandbox sandbox allow list Instructs the UA to enable a set of extra restrictions on any content hosted by the iframe seamless seamless | empty Instructs the UA that the iframe element's browsing context is to be rendered in a manner that makes it appear to be part of the containing document (seamlessly included in the parent document) src URI URL for the audio stream srcdoc iframe srcdoc Content of the page that the nested browsing context is to contain width non-negative integer Horizontal dimension
iframe
{
border: 2px inset;
}
<!doctype html>
<html>
<body>
<iframe name="myname" src="/"></iframe>
</body>
</html>
<!doctype html>
<html>
<body>
<iframe sandbox="allow-same-origin" src="/"></iframe>
</body>
</html>
<!doctype html>
<html>
<body>
<iframe seamless src="/"></iframe>
</body>
</html>
<!doctype html>
<html>
<body>
<iframe src="/"></iframe>
</body>
</html>
<!doctype html>
<html>
<body>
<iframe src="/" srcdoc="<a href='/'>srcdoc overrides src</a>"></iframe>
</body>
</html>
<!doctype html>
<html>
<body>
<iframe src="/" width="100%"></iframe>
</body>
</html>
<!doctype html>
<html>
<body>
<iframe src="/">your browser does not support iframe</iframe>
</body>
</html>
<!doctype html>
<html>
<head>
<style>
iframe
{
background-color: yellow;
border: 2px inset;
}
</style>
</head>
<body>
<iframe srcdoc="<a href='/'>border</a>"></iframe>
</body>
</html>
<!doctype html>
<html>
<head>
<style>
html, body, iframe
{
height: 100%;
}
body
{
margin: 0;
}
iframe
{
background-color: yellow;
border: 0;
display: block;
width: 100%;
}
</style>
</head>
<body>
<iframe srcdoc="<a href='/'>no border</a>"></iframe>
</body>
</html>