/* 公共样式 */
*{
	padding: 0;
	margin: 0;
}
.fl{
	float: left;
}
.fr{
	float: right;
}
.text-center{text-align: center;}
em{
	font-style: normal;
}
a{
	 text-decoration: none;
}
.flex{
  margin-top: 10px;
  display: flex;
  justify-content: space-between;
}