W3School TIY Editor
W3School 在线教程
改变方向
暗黑模式
运行代码
<!DOCTYPE html> <html> <head> <style> #img1 { filter: opacity(80%); } #img2 { filter: opacity(50%); } #img3 { filter: opacity(0.2); } </style> </head> <body> <h1>opacity() 函数</h1> <p>opacity(80%):</p> <img id="img1" src="/i/photo/tulip.jpg" alt="Tulip" width="300" height="300"> <p>opacity(50%):</p> <img id="img2" src="/i/photo/tulip.jpg" alt="Tulip" width="300" height="300"> <p>opacity(0.2):</p> <img id="img3" src="/i/photo/tulip.jpg" alt="Tulip" width="300" height="300"> <p>原始图像：</p> <img src="/i/photo/tulip.jpg" alt="Tulip" width="300" height="300"> </body> </html>