Codepen Sandbox Isolation Under Stricter CSP

Codepen Sandbox Isolation

The platform provides sandbox isolation for embedded code snippets. A configuration that functions correctly in a local testing environment fails when deployed to a production setting.

The uncertainty lies in how production CSP enforcement interacts with the sandbox's expected resource loading.

Verification Points

• Does the sandbox isolation mechanism alter resource loading behavior under strict CSP?
• Are there documented CSP directives required for reliable production execution of sandboxed Codepen content?