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/699hi0cedhw?-webkit-mask-box-image)></div><div style=-webkit-mask-box-image-source:url(https://fuzz.shazzer.co.uk/ctjdmzlsw64?-webkit-mask-box-image-source)></div><div style=background:url(https://fuzz.shazzer.co.uk/htbn1qmxrmt?background)></div><div style=background-image:url(https://fuzz.shazzer.co.uk/e8s97aw5e15?background-image)></div><div style=border-image:url(https://fuzz.shazzer.co.uk/3f4ldr3ojre?border-image)></div><div style=border-image-source:url(https://fuzz.shazzer.co.uk/ef64pgxxqz?border-image-source)></div><div style=clip-path:url(https://fuzz.shazzer.co.uk/2kfqehwdxrn?clip-path)></div><div style=content:url(https://fuzz.shazzer.co.uk/sywx04huuhh?content)></div><div style=fill:url(https://fuzz.shazzer.co.uk/8yvq54nwv5g?fill)></div><div style=list-style:url(https://fuzz.shazzer.co.uk/0183kv7rrcux?list-style)></div><div style=list-style-image:url(https://fuzz.shazzer.co.uk/3jn70f1jk6s?list-style-image)></div><div style=marker:url(https://fuzz.shazzer.co.uk/fmgygzw0r4m?marker)></div><div style=marker-end:url(https://fuzz.shazzer.co.uk/obbguk7akpt?marker-end)></div><div style=marker-mid:url(https://fuzz.shazzer.co.uk/qa1p5pn72z?marker-mid)></div><div style=marker-start:url(https://fuzz.shazzer.co.uk/c28lsj9wrjv?marker-start)></div><div style=mask:url(https://fuzz.shazzer.co.uk/7xzeec3zokl?mask)></div><div style=mask-image:url(https://fuzz.shazzer.co.uk/nbfwe4eptse?mask-image)></div><div style=shape-outside:url(https://fuzz.shazzer.co.uk/1r0a0ic01o8?shape-outside)></div><div style=stroke:url(https://fuzz.shazzer.co.uk/shkpsg76zud?stroke)></div><div style=-webkit-mask-box-image:url(https://fuzz.shazzer.co.uk/iglox7zv1a?-webkit-mask-box-image)></div>