Uses a list of CSS properties and CSP violations to determine which properties cause external requests.
<div style=$[data1]:url(https://fuzz.shazzer.co.uk/$[rand]?$[data1])></div><div style=-webkit-mask-box-image:url(https://fuzz.shazzer.co.uk/05tj4wlbxpbi?-webkit-mask-box-image)></div><div style=-webkit-mask-box-image-source:url(https://fuzz.shazzer.co.uk/m2fi7exkfq?-webkit-mask-box-image-source)></div><div style=background:url(https://fuzz.shazzer.co.uk/bfgkei2z5zg?background)></div><div style=background-image:url(https://fuzz.shazzer.co.uk/zfull24hbg9?background-image)></div><div style=border-image:url(https://fuzz.shazzer.co.uk/h6abxoy2qrv?border-image)></div><div style=border-image-source:url(https://fuzz.shazzer.co.uk/gc2yelf05t?border-image-source)></div><div style=clip-path:url(https://fuzz.shazzer.co.uk/4u1ygdk4kog?clip-path)></div><div style=content:url(https://fuzz.shazzer.co.uk/8hrd0rc971q?content)></div><div style=fill:url(https://fuzz.shazzer.co.uk/0sdbovjjmqrh?fill)></div><div style=list-style:url(https://fuzz.shazzer.co.uk/mf3fa827738?list-style)></div><div style=list-style-image:url(https://fuzz.shazzer.co.uk/jjktgay85u?list-style-image)></div><div style=marker:url(https://fuzz.shazzer.co.uk/cet6z68xyri?marker)></div><div style=marker-end:url(https://fuzz.shazzer.co.uk/8tlp170w5ob?marker-end)></div><div style=marker-mid:url(https://fuzz.shazzer.co.uk/gwjqk10nqwq?marker-mid)></div><div style=marker-start:url(https://fuzz.shazzer.co.uk/t2wp02f5bf9?marker-start)></div><div style=mask:url(https://fuzz.shazzer.co.uk/civkg3bh47?mask)></div><div style=mask-image:url(https://fuzz.shazzer.co.uk/8r2lvsj0k0g?mask-image)></div><div style=shape-outside:url(https://fuzz.shazzer.co.uk/kkpib1642f?shape-outside)></div><div style=stroke:url(https://fuzz.shazzer.co.uk/ya603ab6hyl?stroke)></div><div style=-moz-border-image:url(https://fuzz.shazzer.co.uk/yg36sf358oo?-moz-border-image)></div>