/*修改nav样式*/
#navList li{
  margin-right: 10px;
}
#navList a:link{
  text-shadow: none;
}
#navList li a:hover{
  transition: 0.5s;
}

#welcome{
  padding: 10px;
  text-align: center;
  font: 16px/20px "微软雅黑";
  color: #000000;
  text-shadow: 1px 1px 2px;
}