.a_main {
  width: 640px;
  background: #ffffff;
  overflow: hidden;
  padding: 30px 36px 20px;
  box-sizing: border-box;
  border-bottom: 3px #e7e7e7 solid; 
}
.c_t_1 {
  color: #595757;
  font-size: 35px;
  text-align: left;
  font-weight: 600;
}
.c_t_2 {
  width: 560px;
  margin: 0 auto;
  border-bottom: 1px solid #001b53;
  padding-bottom: 16px;
  font-weight: bold;
}
.aboutImg {
  display: block;
  width: 560px;
  margin: 0 auto;
  padding: 30px 0 10px;
}
.more {
  color: #595757;
  font-size: 1.2em;
  line-height: 1.2em;
  font-weight: bold;
  background: url("../images/arrow_gray_left.jpg") 7em center no-repeat;
  background-size: 1em;
}
.about_img {
  overflow: hidden;
}
.a_main p {
  font-size: 21px;
  color: #595757;
  line-height: 1.5em;
  margin-top: 23px;
  font-weight: 400;
}
.a_main .tit strong{font-size: 27px;font-weight: 900;}
.a_main .pp1{margin-top: 10px;}
.a_main p img{width: 100%;}
.swiper-container {
    width: 560px;
    height: 300px;
    margin: 20px auto;
    padding: 30px 0 10px;
    position: relative;
}
.swiper3{height: 600px;}
.swiper-slide{width: 100%;overflow: hidden;}
.next1,.next2{position: absolute;right: 10px;top:135px;z-index: 3;}
.prav1,.prav2{position: absolute;left: 10px;top:135px;z-index: 3;}
.next3{position: absolute;right: 10px;top:279px;z-index: 3;}
.prav3{position: absolute;left: 10px;top:279px;z-index: 3;}
.baike_tu1_1{background: url(../images/baike_tu1_1.jpg) center center no-repeat;}
.baike_tu1_2{background: url(../images/baike_tu1_2.jpg) center center no-repeat;}
.baike_tu2_1{background: url(../images/baike_tu2_1.jpg) center center no-repeat;}
.baike_tu2_2{background: url(../images/baike_tu2_2.jpg) center center no-repeat;}
.baike_tu2_3{background: url(../images/baike_tu2_3.jpg) center center no-repeat;}
.baike_tu3_1{background: url(../images/baike_tu3_1.jpg) center center no-repeat;background-size: 100%;}
.baike_tu3_2{background: url(../images/baike_tu3_2.jpg) center center no-repeat;background-size: 100%;}
.baike_tu3_3{background: url(../images/baike_tu3_3.jpg) center center no-repeat;background-size: 100%;}
.baike_tu3_4{background: url(../images/baike_tu3_4.jpg) center center no-repeat;background-size: 100%;}
.baike_tu3_5{background: url(../images/baike_tu3_5.jpg) center center no-repeat;background-size: 100%;}
.baike_tu3_6{background: url(../images/baike_tu3_6.jpg) center center no-repeat;background-size: 100%;}
.baike_tu3_7{background: url(../images/baike_tu3_7.jpg) center center no-repeat;background-size: 100%;}