环境:chrome 43.0.2357.132
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<div style="text-align: center;"><font face="Arial" size="2"><span style="line-height: normal; white-space: pre;"> 清朝前期,我国的疆域西跨<input id="gap2" value="">,北接西伯利亚,东临太平洋,南包<input id="gap3" value="">成为亚洲最大的国家。<br></span></font></div>
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参考:http://bbs.youkuaiyun.com/topics/40050703
http://bbs.youkuaiyun.com/topics/20145418