摘要：
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta charset="gb2312" /> 5 <title></title> 6 <style type="text/css"> 7 *{ margin:0; padding:0;} 8 html,body{ overflow:hidden;} 9 .drag-box{ width:200px; height:200px; background:#ccc; position:absolu 阅读全文