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nav{flex-wrap:wrap}.china-task nav button{flex:90px;min-height:64px}.china-task nav span,.china-task nav small{font-size:14px;line-height:1.5}.china-object-row .china-pinyin{font-size:16px}.china-object-row .china-phrase small{font-size:14px}.china-move button{min-width:44px;min-height:44px}.china-move{flex-wrap:wrap}