header {
  background: none !important;
  background-color: #fff !important;
}
.header_btm_line{
  width: 85% !important;
  left: 50%;
  transform: translateX(-50%);
  background-color: #000 !important;
}
.header_menu {
  color: #000 !important;
}
.header_menu_1:nth-child(5){
  font-weight: 700;
  border-bottom: 3px solid #000;
  box-sizing: border-box;
}
.header img{
  filter: invert(1);
}
.header .side_menu_btn img{
  filter: invert(0);
}
.header .side_menu_box img{
  filter: invert(0);
}





.masterclass_top_con{
  width: 85%;
  display: flex;
  padding-bottom: 5vw;
  border-bottom: 1px solid #000;
}
.masterclass_con_left{
  width: 35%;
}
.masterclass_con_right{
  width: 65%;
}
.masterclass_con_txt {
  color: #767676;
  font-weight: 600;
  line-height: 1.5;
  font-size: 0.95vw;
}
.masterclass_con_txtbox{
  width: 100%;
  display: flex;
  gap: 14vw;
  padding: 3vw 0;
  margin-top: 3vw;
  border-top: 1px solid #ebebeb;
  border-bottom: 1px solid #ebebeb;
}
.masterclass_con_txtbox .masterclass_con_txt{
  line-height: 2;
}





.exam_sec{
  padding: 8vw 0;
}
.exam_top_btnwrap, .exam_btm_btnwrap{
  width: 85%;
  border-bottom: 1px solid #ebebeb;
  display: flex;
}
.exam_btm_btnwrap{
  margin-bottom: 32vw;
  gap: 2vw;
}
.exam_top_btn{
  width: 6vw;
  padding: 0.5vw 0;
  text-align: center;
  font-size: 0.9vw;
  font-weight: 600;
  color: #767676;
  cursor: pointer;
  transition: 0.3s;
}
.exam_top_btn.on{
  background-color: #000;
  color: #fff;
}
.exam_top_btn:hover{
  background-color: #000;
  color: #fff;
}
.exam_btm_btn{
  /* width: 4.2vw; */
  color: #767676;
  font-size: 1vw;
  font-weight: 600;
  padding: 1vw 0;
  transition: 0.3s;
  cursor: pointer;
  text-align: center;
}
.exam_btm_btn.on{
  color: #000;
}
.exam_btm_btn:hover{
  color: #000;
}
.swiper_exam{
  width: 94%;
  right: 0;
  top: 36%;
  /* display: none; */
  opacity: 0;
  visibility: hidden;
  transition: 0.3s;
}
.swiper_exam.on{
 /* display: flex; */
 opacity: 1;
 visibility: visible;
}
/* .exam_slide{
  width: 23vw;
} */
 .exam_slide{
  cursor: pointer;
 }
.exam_slide_imgbox{
  width: 23vw !important;
  height: 22vw;
  border: 1px solid #ebebeb;
  border-bottom: 1px solid #000;
  box-sizing: border-box;
  margin-bottom: 2vw;
  overflow: hidden;
}
.exam_slide_img{
  width: 62.2727%;
  height: 20vw;
  display: flex;
  justify-content: center;
  align-items: center;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: -1;
}
.exam_slide_img img{
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.exam_slide_title{
  font-size: 1.1vw;
  margin-bottom: 1vw;
  font-weight: 600;
}
.exam_slide_txt{
  font-size: 0.9vw;
  color: #767676;
  font-weight: 500;
  line-height: 1.5
}
.exam_slide_area {
  background-color: #363636;
  color: #fff;
  font-size: 0.85vw;
  font-weight: 500;
  padding: 0.1vw 0.6vw;
  top: 3%;
  left: 4%;
}
.swiper_exam_btnwrap{
  width: 3vw;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2vw;
  left: 3%;
  top: 36%;
}
.con1_13{
  width: 67.2414%;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  z-index: 5;
}
.swiper_exam_btntxt{
  font-size: 0.75vw;
  font-weight: 500;
}
.swiper_exam_next{
  transform: rotate(180deg);
}
.exam_wrap{
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  display: none;
}
.exam_wrap.on{
  display: flex;
}