after html to pdf, the drop-shadow missed.

[bk111]

a1.css

body img{ border-radius: 20px; /* 圆角 / -webkit-filter: drop-shadow(10px 10px 10px #4444dd); filter: drop-shadow(10px 10px 10px #4444dd); margin-top: 20px; / 在图片上方添加10像素的空行 / margin-bottom: 20px; / 在图片下方添加10像素的空行 */ }

wkhtmltopdf_options = { 'dpi': 600, # 'page-size': 'A4', # 'margin-top': '15mm', "user-style-sheet": "a1.css", 'debug-javascript': [''], 'debug-javascript': True, 'javascript-delay': 10000, 'header-html': 'header.html', #'header-line': '', 'footer-html': 'footer.html', 'footer-right': '[page]/[topage]', #在页脚加页码 'no-stop-slow-scripts': True, 'load-media-error-handling': 'skip', 'load-error-handling': 'skip', 'enable-local-file-access': True }

There is drop-shadow picture in html, but no drop-shadow in pdf, why?