css-color-hsl RUN
 
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<!DOCTYPE html>
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<html>
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    <head>
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        <style>
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            h1 {
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                background-color: hsl(180, 50%, 95%);
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                color: hsl(160, 50%, 50%);
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                border: 1px solid  hsl(100, 100%, 100%);
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            }
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        </style>
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    </head>
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    <body>
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        <h1>Đây là thẻ h1</h1>
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    </body>
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</html>
PHÓNG TO