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document.body.style.background = '#1a1a2e'; const msg = document.createElement('div'); msg.textContent = 'Hello from JS Playground!'; msg.style.cssText = 'position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);font-size:28px;color:#7c5cfc;font-weight:bold;font-family:sans-serif;'; document.body.appendChild(msg);
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