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<!DOCTYPE html> <html> <body> <h1 style="background-color:rgba(255, 99, 71, 0);">rgba(255, 99, 71, 0)</h1> <h1 style="background-color:rgba(255, 99, 71, 0.2);">rgba(255, 99, 71, 0.2)</h1> <h1 style="background-color:rgba(255, 99, 71, 0.4);">rgba(255, 99, 71, 0.4)</h1> <h1 style="background-color:rgba(255, 99, 71, 0.6);">rgba(255, 99, 71, 0.6)</h1> <h1 style="background-color:rgba(255, 99, 71, 0.8);">rgba(255, 99, 71, 0.8)</h1> <h1 style="background-color:rgba(255, 99, 71, 1);">rgba(255, 99, 71, 1)</h1> </body> </html>