51help TIY
码:
<!DOCTYPE html> <html> <head> <style> .hometown { background-color:yellow; } </style> </head> <body> <p>。</p> <p class="hometown">我住在 Duckburg。</p> <p>。</p> <p class="hometown">我也住在 Duckburg。</p> </body> </html>
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