margins in the frame

<frame src="" marginwidth="" marginheight="">

Browser
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The marginwidth and marginheight attributes of the FRAME element specifies the margins in the frame.

<frame src="example.html" marginwidth="10" marginheight="10">

Attribute Value Explanation
marginwidth=" " pixels the left and right margins in the frame
marginheight=" " pixels the top and bottom margins in the frame

Example

The margins in the left frame : Default
The margins in the center frame : 30px
The margins in the right frame : 0 

<html>
<head>
<title>TAG index</title>
</head>

<frameset cols="33%,*,33%">
<frame src="example13a.html">
<frame src="example13a.html" marginwidth="30" marginheight="30">
<frame src="example13a.html" marginwidth="0" marginheight="0">

<noframes>
<body>
<p>Alternate content</p>
</body>
</noframes>

</frameset>

</html>
Output
Example page