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改变主题,夜晚/白天
<!DOCTYPE html> <html> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <body> <p style="font-size:5vw;">First paragraph having the width of 5vw.</p> <p style="font-size:10vw;">Second paragraph having the width of 10vw.</p> </body> </html>