.swiper .swiper-slide img{
    width: 100%;
    height: 100%;
    vertical-align: middle
 }

 .our_courses{
   background-color: #F5F5F5;
   padding: 6.6rem 0;
 }

.title_header{
   margin-bottom: 5.6rem;
 }

 .title_header .title_img{
   margin: 0 auto;
   display: block;
 }

 .title_header .title_subtitle{
   text-align: center;
   color:#7A8799 ;
   font-size: 1.8rem;
   margin-top: 2rem;
 }

 .our_courses .one_more,  .popular_science .one_more{
  width: var(--common-width);
  min-width: var(--common-width);
  text-align: right;
  margin-top: 2.5rem;
  left: 50%;
  margin-left: -60rem;
  position: absolute;
 }

 .our_courses_content{
   display: flex;
   justify-content: space-between;
   margin: 0 auto;
   width: var(--common-width);
   min-width: var(--common-width);
 }

 .our_courses_content_item{
   width: 38rem;
 }

 .our_courses_content_item_img{
   width: 100%;
 }

 .our_courses_content_item_text{
   background-color: #fff;
   padding:2rem 3rem;
 }

 .our_courses_content_item_text .our_courses_content_item_desc_title{
   font-size: 1.5rem;
   font-weight: bold;
   text-align: center;
   margin-bottom: 1.8rem;
     overflow: hidden;
     text-overflow: ellipsis;
     display: -webkit-box;
     -webkit-line-clamp: 1;
     -webkit-box-orient: vertical;
 }

 .our_courses_content_item_text .our_courses_content_item_desc_desc{
   color: #999999;
   font-size: 1.2rem;
   text-align: center;
     overflow: hidden;
     text-overflow: ellipsis;
     display: -webkit-box;
     -webkit-line-clamp: 2;
     -webkit-box-orient: vertical;
 }

 .our_courses_content_item_text .text-left{
   text-align: left;
   overflow: hidden;
   text-overflow: ellipsis;
   display: -webkit-box;
   -webkit-line-clamp: 1;
   -webkit-box-orient: vertical;

 }

 .about_me{
   padding: 6.6rem 0;
 }

 .about_me_content{
   display: flex;
   justify-content: space-between;
   width: var(--common-width);
   min-width: var(--common-width);
   margin: 0 auto;
 }

 .about_me_content .about_me_img{
   margin-right: 3.6rem;
 }

 .about_me_content .about_me_text .about_me_text_title{
   font-size: 2.6rem;
   color: #333333;
 }

 .about_me_content .about_me_text .about_me_text_subtitle{
   margin-top: 2.4rem;
   margin-bottom: 3rem;
   font-size: 1.6rem;
   color: #666666;
 }

 .about_me_content .about_me_text .about_me_text_ordinance a{
   font-size: 2rem;
   color: #666666;
 }

.popular_science{
   padding: 6.6rem 0;
}

.popular_science_content{
   display: grid;
   grid-template-columns: repeat(3, 39.3rem);
   column-gap: 1rem;
   row-gap: 1rem;
   justify-content: space-between;
   width: var(--common-width);
   min-width: var(--common-width);
   margin: 0 auto;
}

.popular_science_content_item{
   display: flex;
   background-color: #F5F5F5;
   padding: 2rem;
}

.popular_science_content_item .popular_science_content_item_img{
   margin-right: 1.5rem;
}

.popular_science_content_item .popular_science_content_item_text .popular_science_content_item_text_title{
   font-weight: bold;
   color: #121C2A;
   font-size: 1.6rem;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
}
.popular_science_content_item .popular_science_content_item_text .popular_science_content_item_text_desc{
   color: #666666;
   font-size: 1.4rem;
   margin-top: 1.6rem;
   margin-bottom: 2.8rem;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

.popular_science_content_item .popular_science_content_item_text .more{
  color:#666666;
  font-size: 1.2rem;
}

.teacher_team{
  background-color: #F5F5F5;
   padding: 6.6rem 0;
}

.teacher_team .content{
  display: flex;
  width: var(--common-width);
  min-width: var(--common-width);
  margin: 0 auto;
}

.teacher_team .content .text {
  margin-right: 6.4rem;
}

.teacher_team .content .text .title{
  font-size: 3rem;
  color: #333333;
  margin-bottom: 4rem;
}


.teacher_team .content .text .desc{
  font-size: 1.8rem;
  color: #666666;
  line-height: 3rem;
}



/* 侧边栏联系我们 */

.sidebar{
  position: fixed;
  right: 20px;
  top: 14%;
  z-index: 998;
}

.sidebar .close {
  display: flex;
  justify-content: flex-end;
}

.sidebar .close .close_img{
  width: 20px;
  height: 20px;
  cursor: pointer;
}



.concat_information{
  border-radius: 8px;
  background-image: linear-gradient(to bottom, #E9212E, #E9212E);
  position: fixed;
  width: 72px;
  right: 20px;
  bottom: 20%;
  z-index: 998;
  padding: 15px 8px;
}

.concat_information .media_box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  position: relative;
}

.concat_information .line{
  width: 100%;
  height: .5px;
  background-color: #fff;
  margin: 15px 0;
}

.concat_information .media_box .icon{
  width: 24px;
  height: 24px;
}

.concat_information .media_box .about_img{
  position: absolute;
  width: 146px;
  height: 168px;
  right: 78px;
  background-image: url(../img/m_10/10-02.png);
  background-repeat: no-repeat;
  background-size: cover;
  z-index: 999;
  padding: 20px;
  display: none;
}

.concat_information .media_box .about_img .img{
  height: 90%;
}

.concat_information .media_box .about_img p{
  color: black;
  text-align: center;
}

.concat_information .media_box p{
  color: 14px;
  color: white;
  margin-top: 8px;
}

.concat_information .media_box:hover>.about_img{
  display: block;
}



.swiper-button-next:after, .swiper-button-prev:after{
  color: #BFBABB;
  font-weight: bold;
}