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@-moz-document domain(reddit.com) {

.arrow.upmod { background-image:url(http://www.reddit.com/static/aupmod.gif) !important; visibility: visible !important; display: block !important; }
.arrow.downmod { background-image:url(http://www.reddit.com/static/adownmod.gif) !important; visibility: visible !important; display: block !important; }
.arrow.up { background-image:url(http://www.reddit.com/static/aupgray.gif) !important; visibility: visible !important; display: block !important; }
.arrow.down { background-image:url(http://www.reddit.com/static/adowngray.gif) !important; visibility: visible !important; display: block !important; }

}