@media screen and (max-width:1030px) {
.header .head, .nav_bg .nav, .i_box_a, .i_news, .i_box_b, .f_bg .foot, .scd {
	width: 740px;
	margin: 0px auto;
}
.nav_bg .nav li {
	float: left;
}
.nav_bg .nav li a {
	font-size: 15px;
	padding: 0px 13px;
}
.i_pl li {
	margin-right: 50px;
	margin-bottom: 30px;
}
.i_news .i_nr {
	width: 100%;
	margin-top: 30px;
}
.i_news .i_nl {
	width: 100%;
}
.i_news .i_nl dd {
	width: 465px;
}
.i_box_b .i_about dt img {
	width: 297px;
	height: 212px;
}
.i_box_b .i_about dt {
	width: 301px;
	height: 216px;
}
.i_about dd {
	width: 430px;
}
.contact dt, .contact dt img {
	width: 401px;
	height: 231px;
}
.scd .scd_r {
	width: 510px;
}
.news dl dd {
	width: 280px;
}
.news dl dd .des {
	height: 98px;
}
.pro_d dl dt {
	float: left;
	margin-bottom: 20px;
}
.pro_d dl dd {
	width: 100%;
}
.scd_r .pro_l li {
	margin-right: 26px !important;
}
.news form {
	height: 350px;
}
.news form input {
	display: block;
	line-height: 50px;
}
.news form span {
	height: 50px;
}
.zuixin {
	width: 50%;
	margin-right: 6.25%;
}
}
@media screen and (max-width:770px) {
.header .head, .nav_bg .nav, .i_box_a, .i_news, .i_box_b, .f_bg .foot, .scd, .nav_m {
	width: 480px;
	margin: 0px auto;
}
.head .logo {
	width: 100%;
	float: none;
}
.head .head_r {
	width: 100%;
	margin-top: 20px;
	text-align: left;
}
.head_r .search {
	margin-top: 0px;
}
.nav_m .n_icon {
	display: block;
}
.nav_m .nav {
	display: none;
}
.nav_bg {
	height: auto;
}
.nav_m {
	min-height: 50px;
	position: relative;
}
.nav_m .nav {
	width: 100%;
	padding-top: 50px;
}
.nav_m .nav li, .nav_m .nav li a {
	width: 100%;
	height: 50px;
	line-height: 50px;
}
.i_pl li {
	margin: 20px 24px 0 !important;
}
.i_news .i_nl dt, .i_news .i_nl dt img {
	width: 207px;
	height: 177px;
}
.i_news .i_nl dd {
	width: 255px;
}
.i_box_b .i_about dt {
	width: 478px;
	height: 343px;
}
.i_box_b .i_about dt img {
	width: 474px;
	height: 339px;
}
.i_about dd {
	width: 100%;
	margin-top: 20px;
}
.contact dt, .contact dt iframe {
	width: 480px;
	height: 276px;
	margin-bottom: 20px;
}
#dituContent {
	width: 480px;
	height: 276px;
	margin-bottom: 20px;
}
.contact dd, .scd .scd_l, .scd .scd_r {
	width: 100%;
}
.scd_r .pro_l li {
	margin: 10px 5px !important;
}
.scd_r .pro_l {
	padding: 30px 0;
}
.pro_d dl dt, .pro_d dl dt img {
	width: 478px;
	height: 332px;
}
.news dl dt, .news dl dt img {
	width: 184px;
	height: 139px;
}
.scd_r .pst {
	height: auto;
	padding: 10px 0;
	line-height: 160%;
}
.zuixin {
	margin-right: 0;
}
}
@media screen and (max-width:500px) {
.header .head, .nav_bg .nav, .i_box_a, .i_news, .i_box_b, .f_bg .foot, .scd, .nav_m {
	width: 320px;
	margin: 0px auto;
}
.head .logo img, .head .logo {
	width: 320px;
	height: 50px;
}
.head_r .search {
	width: 320px;
	float: none;
	margin-top: 20px;
}
.head_r .search .text {
	width: 300px;
}
.pro_d dl dt, .pro_d dl dt img {
	width: 318px;
	height: 220px;
}
.i_pl li {
	width: 100%;
	margin: 0px !important;
	margin-bottom: 20px !important;
	height: auto;
}
.i_pl li img {
	width: 318px;
	height: 259px;
}
.i_news .i_nl {
	height: auto;
}
.i_news .i_nl dt, .i_news .i_nl dt img {
	width: 318px;
	height: 271px;
}
.i_news .i_nl dd {
	width: 100%;
}
.i_box_b .i_about dt {
	width: 318px;
	height: 228px;
}
.i_box_b .i_about dt img {
	width: 314px;
	height: 224px;
}
.scd_r .pro_l li {
	width: 100%;
	margin: 0px !important;
	margin-bottom: 20px !important;
}
.scd_r .pro_l li img {
	width: 318px;
	height: 257px;
}
.pages a, .pages span, .pages input {
	margin-bottom: 10px;
}
.contact dt, .contact dt iframe {
	width: 318px;
	height: 182px;
}
#dituContent {
	width: 318px;
	height: 182px;
}
.news form {
	width: 318px;
	height: 350px;
}
.news form input {
	height: 40px;
}
.news form span {
	height: 40px;
	line-height: 40px;
}
.news form textarea {
	height: 30px;
}
.yzm {
	height: 40px;
}
.clearfix dl dt {
	width: 320px;
	display: block;
}
/*.zuixin {width:320px;}*/
.zuixin {
	width: 100%;
	margin-right: 6.25%;
}
/*.des {width:320px;padding:0 auto;height:45px;}*/
.descimg {
	margin-left: 20%;
}
.newsdesc {
	min-height: 40px;
}
}