This feature has been removed from the Web standards. Though some browsers may still support it, it is in the process of being dropped. Avoid using it and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
<frameset> is an HTML element which is used to contain
<iframe>, this element is not typically used by modern web sites.
Like all other HTML elements, this element supports the global attributes.
- This attribute specifies the number and size of horizontal spaces in a frameset.
- This attribute specifies the number and size of vertical spaces in a frameset.
<frameset cols="50%,50%"> <frame src="https://developer.mozilla.org/en/HTML/Element/frameset" /> <frame src="https://developer.mozilla.org/en/HTML/Element/frame" /> </frameset>