HTML Frame Borders: Legacy frameborder and Modern CSS

The historical frameborder attribute controlled whether a border appeared around a frame in a frameset.

Historical frameborder syntax Top ↑

<frameset cols="50%,50%">
  <frame src="frame1src.html" frameborder="0">
  <frame src="frame2src.html" frameborder="0">
</frameset>

Modern iframe border control Top ↑

For a current <iframe>, control the visible border with CSS rather than old frame presentation attributes.

<iframe class="embedded-page" src="example.html" title="Example page"></iframe>

.embedded-page {
  border: 0;
}

Frequently Asked Questions Top ↑

Should I use frameborder="0" today?
No for new HTML. Use CSS on an iframe when a border needs to be removed.

Does CSS border work on iframe?
Yes. An iframe is a normal element whose outer border can be styled with CSS.

← Frames overview Modern iframe →

Subhendu Mohapatra

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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