body,h1,h2,h3,h4,h5,h6,p,section,nav,ul,li{
  padding: 0;
  margin:0;
}

body{
  font-family: "Microsoft YaHei";
  font-size: 16px; 
}

a,a:link,a:hover,a:active,a:visited{
  text-decoration: none;
  color:#000;
  padding:0;
  margin: 0;
}

ul,li{
  list-style: none;
  padding:0;
  margin: 0;
}


.allimg{
  display: block;
  width: 100%;
}