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auto;font-size:14px;line-height:50px;color:#5a5b5c;text-align:center}#totop{display:block;width:0;height:0;position:fixed;right:5px;bottom:240px;color:#999;background-color:#fff;overflow:hidden;transition:.2s;transform-origin:center;z-index:100}#totop.show{width:40px;height:48px;vertical-align:middle;border:1px solid #ddd;background-color:#fff}#totop.show:hover{color:#2d78d2;background-color:#eee}#totop.show:hover em{background-color:#eee}#totop em{display:block;padding:4px;font-style:normal;font-size:14px;line-height:20px;text-align:center}