body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,p,blockquote,th,td,span,a {
	margin: 0; padding: 0; font-family: "微软雅黑";
}
a{
	text-decoration: none;
}
a:focus {
	text-decoration: none;
	outline: none;
}
em{
	font-style: normal;
}
ul li{
	list-style: none;
}
*{
	margin: 0px;
	padding: 0px;
}
.mt-10 {
	margin-top: 10px;
}
.mt-20 {
	margin-top: 20px;
}
.mt-30 {
	margin-top: 30px;
}
.mt-40 {
	margin-top: 40px;
}
.mt-50 {
	margin-top: 50px;
}
.ml-10 {
	margin-left: 10px;
}
.ml-20 {
	margin-left: 20px;
}
.ml-30 {
	margin-left: 30px;
}
.ml-40 {
	margin-left: 40px;
}
.ml-50 {
	margin-left: 50px;
}
.mb-10 {
	margin-bottom: 10px;
}
.mb-20 {
	margin-bottom: 20px;
}
.mb-30 {
	margin-bottom: 30px;
}
.mb-40 {
	margin-bottom: 40px;
}
.mb-50 {
	margin-bottom: 50px;
}
.pl-10 {
	padding-left: 10px;
}
.pl-20 {
	padding-left: 20px;
}
.pr-10 {
	padding-right: 10px;
}
.pr-20 {
	padding-right: 20px;
}