HTML Tester HTML Tester Pro + Split Mode ⛶ Full Screen -- sessions -- Save Del Export Font A- A+ Wrap HTML CSS JS <!DOCTYPE html> <html> <head> <style> body { background: #0f172a; color: #e2e8f0; font-family: system-ui, sans-serif; padding: 30px; } h1 { color: #38bdf8; margin-bottom: 12px; } p { color: #94a3b8; line-height: 1.6; } .box { margin-top: 20px; width: 200px; height: 200px; background: #1e293b; border-radius: 10px; display: flex; align-items: center; justify-content: center; color: #38bdf8; font-size: 14px; } </style> </head> <body> <h1>HTML Tester Pro</h1> <p>Edit this code and click <strong>Run</strong>.</p> <div class="box">Preview Box</div> <script> console.log("Ready."); </script> </body> </html> /* CSS — split mode */ body { font-family: system-ui, sans-serif; background: #0f172a; color: #e2e8f0; padding: 30px; } h1 { color: #38bdf8; } // JS — split mode console.log("Hello from JS tab!"); Scale 100% Mob Tab Full Auto BG ▶ Run Copy Clear ready Share Get link Facebook X Pinterest Email Other Apps Share Get link Facebook X Pinterest Email Other Apps Comments
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