57+newtab/usercontent.css
/*@name        新标签页图标定制
  @namespace   https://github.com/dupontjoy/userChrome.js-Collections-/tree/master/CingFox
  @author      Cing
  @version     1.00-2017.12.06
  @reference   https://bbs.kafan.cn/forum.php?mod=redirect&goto=findpost&ptid=2109126&pid=41020158          
*/

@-moz-document url("about:newtab") {    
/*不显示右下角小图标*/
#onboarding-overlay-button, .top-sites-list .top-site-outer .default-icon, .top-sites-list .top-site-outer .title .icon, .section-top-bar .info-option-icon {
    opacity: 0 !important;
}

/*常用网站常规换图标*/
.screenshot {
                opacity: 1!important;
        }
        [href*="hbr.org"] .screenshot {
                background: rgba(255, 255, 255, 1) url("./Thumbnail/HBR.png") center center no-repeat !important;
                background-size: 80% 80%!important;
        }
        [href*="economist.com"] .screenshot {
                background: rgba(255, 255, 255, 1) url("./Thumbnail/Economist.png") center center no-repeat !important;
                background-size: 80% 80%!important;
        }
        [href*="cnn.com"] .screenshot {
                background: rgba(255, 255, 255, 1) url("./Thumbnail/CNN.png") center center no-repeat !important;
                background-size: 80% 80%!important;
        }
        [href*="bbs.kafan.cn"] .screenshot {
                background: rgba(255, 255, 255, 1) url("./Thumbnail/Kafan.png") center center no-repeat !important;
                background-size: 80% 40%!important;
        }
        [href*="cnbeta.com"] .screenshot {
                background: rgba(255, 255, 255, 1) url("./Thumbnail/Cnbeta.jpg") center center no-repeat !important;
                background-size: 100% 100%!important;
        }
        [href*="chouti.com"] .screenshot {
                background: rgba(255, 255, 255, 1) url("./Thumbnail/Chouti.jpg") center center no-repeat !important;
                background-size: 80% 80%!important;
        }
        [href*="zhihu.com"] .screenshot {
                background: rgba(255, 255, 255, 1) url("./Thumbnail/Zhihu.png") center center no-repeat !important;
                background-size: 80% 80%!important;
        }
        [href*="qdaily.com"] .screenshot {
                background: rgba(255, 255, 255, 1) url("./Thumbnail/Qdaily.png") center center no-repeat !important;
                background-size: 90% 70%!important;
        }
 
 /*特殊换图标*/       
        [href*="www.nytimes.com"] .rich-icon {
                background: rgba(255, 255, 255, 1) url("./Thumbnail/NYT.jpg") center center no-repeat !important;
                background-size: 70% 85%!important;
        }
        [href*="www.wsj.com"] .rich-icon {
                background: rgba(255, 255, 255, 1) url("./Thumbnail/WSJ.jpg") center center no-repeat !important;
                background-size: 100% 100%!important;
        }
        [href*="www.ft.com"] .rich-icon {
                background: rgba(255, 255, 255, 1) url("./Thumbnail/FT.png") center center no-repeat !important;
                background-size: 80% 80%!important;
        }
        [href*="www.youtube.com"] .rich-icon {
                background: rgba(255, 255, 255, 1) url("./Thumbnail/Youtube.jpg") center center no-repeat !important;
                background-size: 80% 70%!important;
        }

/*自定义背景*/
body {
background-image:url("./Thumbnail/bg01.png")!important;
background-position: center !important;
        background-size: 100% 100% !important;
        }

}  