@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);

main-window[stylish-url="about:support"] #page-proxy-favicon,
#main-window[stylish-url="about:support"] #fav-image,
#fav-image[style*="about:support"] , 
#navigator-toolbox #fav-image[label="Troubleshooting Information"],
.tabbrowser-tab[label="about:support"] .tab-icon-image,
.tabbrowser-tab[label="Troubleshooting Information"] .tab-icon-image
{ width: 0 !important;
padding-left: 18px !important;
background : url(data:image/png;base64,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) center no-repeat !important; }