What Is the Shadow DOM — and Why You Should Use It for Squarespace Embeds

Ever pasted a chart or widget into Squarespace and watched your layout fall apart? It's usually not bad code — it's the absence of a boundary. Here's what the Shadow DOM is, why embeds "bleed" into your page without it, and how it makes dropping custom components into your site safe and predictable. Plain English, no CS degree required.