Random Quote Machine - Blocked Page with Twitter

[lasjorg]

It is because the Codepen pens run inside an iframe.

Random Quote Machine - Twitter link and animation

If you want to check that the button works as expected you can use the Debug mode view (Change View > Debug mode). Here are the docs that talk about the iframe limitation (all Codepen views are inside an iframe except the debug view). Web Intents Web Intents cannot be loaded inside an iframe. A Twitter author must view the full webpage before deciding to author a new Tweet or Tweet action pre-populated by your specified Web Intent or follow a specified Twitter account.

_top is a different context as you can see it opens in the same tab and not a new one. Codepen debug mode is not inside an iframe so _blank works.

: The Anchor element - HTML: HyperText Markup Language | MDN