HTML Reference Manual

HTML Tag Reference

The marginwidth attribute specifies the width between the content and the frame on the left and right sides (in pixels).

The left and right margins of the first frame are 20 pixels, the left and right margins of the second frame are 3 Pixels:

<frameset cols="50%,50%">
　　<frame src="frame_a.htm" marginwidth="20">
　　<frame src="frame_b.htm" marginwidth="3">
</frameset>

IEFirefoxOperaChromeSafari

All major browsers support the marginwidth attribute.

HTML5 The <frame> tag is not supported.

The marginwidth attribute specifies the width between the content and the frame on the left and right sides (in pixels).

<frame marginwidth="pixels">

Value	Description
pixels	Specifies the left and right margins of the frame.