The Agent Skills Directory

[SAFE]: The skill provides CSS utility classes and tokens for visual layout assistance, such as container lines and corner markers. All instructions are focused on design implementation.
[SAFE]: The demo environment in demo/index.html uses a sandboxed iframe with restricted permissions (sandbox="allow-scripts") and a strict Content Security Policy (CSP) to prevent cross-site scripting (XSS) or unauthorized data access during design previews.
[SAFE]: Base64 encoding in demo/index.html is used as a functional mechanism to package the demo's HTML content for the srcdoc attribute of the sandboxed iframe, rather than for obfuscating malicious code.
[SAFE]: External assets and runtime libraries (Tailwind CSS, GSAP, and Iconify) are sourced from reputable and well-known content delivery networks (CDNs) as specified in the demo/source.json manifest.

container-lines