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<!DOCTYPE html> <html> <head> <style> .button { background-color: #4CAF50; /* 绿色 */ border: none; color: white; padding: 15px 32px; text-align: center; text-decoration: none; display: inline-block; margin: 4px 2px; cursor: pointer; } .button1 {font-size: 10px;} .button2 {font-size: 12px;} .button3 {font-size: 16px;} .button4 {font-size: 20px;} .button5 {font-size: 24px;} </style> </head> <body> <h1>按钮大小</h1> <p>通过 font-size 属性改变按钮的字体大小：</p> <button class="button button1">10px</button> <button class="button button2">12px</button> <button class="button button3">16px</button> <button class="button button4">20px</button> <button class="button button5">24px</button> </body> </html>