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/g43blphjui?-webkit-mask-box-image)></div><div style=-webkit-mask-box-image-source:url(https://fuzz.shazzer.co.uk/ojm6guxgneg?-webkit-mask-box-image-source)></div><div style=background:url(https://fuzz.shazzer.co.uk/tb6st4uhfi?background)></div><div style=background-image:url(https://fuzz.shazzer.co.uk/k3mjj64c4mr?background-image)></div><div style=border-image:url(https://fuzz.shazzer.co.uk/m0kkvjg6sml?border-image)></div><div style=border-image-source:url(https://fuzz.shazzer.co.uk/9xo2oicvusg?border-image-source)></div><div style=clip-path:url(https://fuzz.shazzer.co.uk/9smprwx54rd?clip-path)></div><div style=content:url(https://fuzz.shazzer.co.uk/huojq3aba6?content)></div><div style=fill:url(https://fuzz.shazzer.co.uk/zu7y1bdv3q?fill)></div><div style=list-style:url(https://fuzz.shazzer.co.uk/98ubyjhgpe?list-style)></div><div style=list-style-image:url(https://fuzz.shazzer.co.uk/hlgjwbqggxl?list-style-image)></div><div style=marker:url(https://fuzz.shazzer.co.uk/q58ycr437u?marker)></div><div style=marker-end:url(https://fuzz.shazzer.co.uk/vig632kcg88?marker-end)></div><div style=marker-mid:url(https://fuzz.shazzer.co.uk/6z2sosv8sy3?marker-mid)></div><div style=marker-start:url(https://fuzz.shazzer.co.uk/thhd760952k?marker-start)></div><div style=mask:url(https://fuzz.shazzer.co.uk/t834pau1w2?mask)></div><div style=mask-image:url(https://fuzz.shazzer.co.uk/u74l1i3vti?mask-image)></div><div style=shape-outside:url(https://fuzz.shazzer.co.uk/sw21g24fvvj?shape-outside)></div><div style=stroke:url(https://fuzz.shazzer.co.uk/tud3sgzgo8?stroke)></div><div style=-webkit-mask-box-image:url(https://fuzz.shazzer.co.uk/kfuuxgutis?-webkit-mask-box-image)></div>