header{

}

body{
    width: 100%;
    position:flex;
    overflow-x: hidden;
}

section{
    width: 100%;
    overflow-x: none;
}

.text_f1{
    font-size: 1vw;
}

.text_f3{
    font-size: 7vw;
}

.text_f4{
    font-size: 8vw;
}

.text_f5{
    font-size: 9vw;
}

.text_f6{
    font-size: 11vw;
}

.text_f7{
    font-size: 7vw;
}

.text_f9{
    font-size: 18vw;
}

.main_title{
    background-size: 100%;
    background-repeat: no-repeat;
    height: 180vw;
    padding: 25% 5% 0 0 ;
    font-family: Noto_Sans_CJK_KR_black;
    font-weight: 900;
}

.main_title div{
    float: right;
    color: #ffffff;
    font-size: 15vw;
}

#id_title{
    margin-right: 10%;
}

.why{
    background-size: 200% 90%;
    background-position-x: 37%;
    background-repeat: no-repeat;
    height: 130vw;
    padding-top: 49%;
}

.why div{
    text-align: left;
    font-size: 9vw;
    font-family: Tmon;
}

.why div span{
    padding-left: 7%;
    font-size:18vw;
}

.why div div{   
    margin-top: 2%;
    padding-left: 10%;
}

.why1{
    background-size: 50%;
    background-position-x: right;
    background-repeat: no-repeat;
    height: 130vw; 
    padding-left: 3%;
    font-size: 11vw;
}

.why1 div{
    text-align: left;
    margin-bottom: 2%;
}

.why1 div span{
    font-size:18vw;
}

.why1 div:first-child{
    padding-top: 50%;
    font-family: Tmon;
}

.why1 div:last-child{
    font-size:8vw;
    font-family: samlip;
}

.why2{
    background-size: 55% 45%;
    background-repeat: no-repeat;
    background-position-x: -30%;
    height: 130vw;
    margin-top: 25%;
    padding-right: 3%;
    font-size: 11vw;
}

.why2 div:first-child{
    padding-top: 40%;
    font-family: Tmon;
}

.why2 div{
    margin-bottom: 4%;
    text-align: right;
}

.why2 div span{
    font-size: 18vw;
}

.why2 div:last-child{
    font-size: 8vw;
    font-family: samlip;
}

.why3{
    background-size: 50%;
    background-position-x: right;
    background-repeat: no-repeat;
    height: 130vw; 
    padding-left: 3%;
    font-size:11vw;
}

.why3 div:first-child{
    padding-top: 55%;
    font-family: Tmon;
}

.why3 div:last-child{
    font-size:8vw;
    font-family: samlip;
}

.why3 div{
    text-align: left;
    margin-bottom: 4%;
}

.why3 div span{
    font-size:18vw;
}

.who{
    background-size: 200%;
    background-position-x: 37%;
    background-repeat: no-repeat;
    height: 170vw; 
    font-size: 9.5vw;
    font-family: Tmon;
}

.who div{
    text-align: right;
    padding: 50% 5% 0 0 ;
}

.who div span{
    font-size:18vw;
}

.who1, .who3{
    background-size: 90%;
    background-position-x: right;
    background-repeat: no-repeat;
    height: 60vw;
    margin-top: 5%;
    padding: 60% 5% 0 0;
    color: white;
    text-align: right;
    font-size: 7vw;
    font-family: Cafe24Danjunghea;

}

.who2{
    background-size: 90%;
    background-position-x: left;
    background-repeat: no-repeat;
    height: 60vw;
    text-align: left;
    padding: 60% 0 0 5%;
    color: white;
    font-size: 7vw;
    font-family: Cafe24Danjunghea;
}

.who1 span, .who2 span, .who3 span{
    font-size:10vw;
    font-weight: 600;
}

.text_box1{
    margin-bottom: 10%;
    font-size: 15vw;
    font-family: Tmon;
}

.what{
    background-size: 200% 90%;
    background-position-x: 40%;
    background-repeat: no-repeat;
    height: 130vw;
    margin-top: 35%;
    padding: 50% 0 0 5%;
    text-align: left;
    font-size: 8vw;
    font-family: Tmon;
}

.what span{
    font-size: 18vw;
}

.what div{
    margin-top: 3%;
}

.gift_R span, .gift_L span{
    font-size: 11vw;
}

.gift_R{
    position:relative;
    height: 130vw;
    font-size: 8vw;
    font-family: Tmon;
}

.gift_R div:first-child{
    position: absolute;
    background-size: 80%;
    background-position-x: 200%;
    background-repeat: no-repeat;
    right: 0;
    width: 80%;
    height: 50%;
    padding:15% 5% 0 0;
    text-align: right;
}

.gift_R div:last-child{
    width: 90%;
    padding-left: 5%;
}

.gift_R div:last-child img{
    padding-top: 50%;
    width: 100%;
}

.gift_L{
    position:relative;
    height: 130vw; 
    font-size: 8vw;
    font-family: Tmon;
}

.gift_L div:first-child{
    position: absolute;
    background-size: 80%;
    background-position-x: -100%;
    background-repeat: no-repeat;
    width: 78%;
    height: 50%;
    padding:15% 0 0 5%;
    text-align: left;
}

.gift_L div:last-child {
    width: 90%;
    padding-left: 5%;
}

.gift_L div:last-child img{
    width: 100%;
    padding-top: 50%;
}

#gift1 div:first-child{
    padding-top: 20%;
}

.how{
    background-size: 200%;
    background-position-x: 37%;
    background-repeat: no-repeat;
    height: 130vw;
    margin-top: 30%;
    padding:50% 5% 0 0;
    text-align: right;
    font-size: 9vw;
    font-family: Tmon;
}

.how span{
    font-size:18vw;
}

.product_wrap{
    font-size:8vw;
}

.product_wrap .product:not(:first-child){
     margin-top: 20%;
}

.product{
    width: 90%;
    padding-left: 5%;
    text-align: left;
    font-family: Samlip;
}

.product div span{
}

.product div img{
    width: 100%;
}

.product div:last-child{
    padding-top: 2%;
    margin-left: 7%;
}

.how_lecture{
    background-size: 100%;
    background-repeat: no-repeat;
    width: 90%;
    height: 80vw;
    margin:20% 0 0 5%;
    padding-top: 30%;
    color: white;
    font-size: 11vw;
    font-family: Tmon;
}

.cap_video{
    position: relative;
    height: 150vw;
}

.cap_video div:first-child{
    width: 80%;
    float: right;
    margin-right: 10%;
}

.cap_video_text{
    position: absolute;
    background-size: 100% 100%;
    background-repeat: no-repeat;
    width: 80%;    
    height: 65%;
    margin-top: 50%;
    padding:8% 0 0 10%;
    text-align: left;
    font-family: Samlip;
    font-size:8vw;
}

.cap_video div img{
    width: 100%;
}

.video{
    margin-top: 20%;
    height: 150vw;
}

.video div:first-child{
    position: relative;
    display: inline-block;
    width: 100%;
    padding-top: 56.25%;
}
.video div iframe{
    margin-left: 5%;
    position: absolute;
    top: 0; 
    left: 0; 
    right: 0; 
    bottom: 0;
    width: 90%;
    height: 100%;
}

.aft_video_text{
    float: right;
    background-size: 100% 100%;
    background-repeat: no-repeat;
    width: 80%;    
    height: 45%;
    margin:5% 0 5% 0;
    padding:8% 10% 0 0;
    text-align: right;
    font-size: 8vw;
    font-family: Samlip;
}

.aft_video_text span{
    font-size: 11vw;
}

.text_box2{
    margin-top: 10%;
    font-size: 16vw;
    font-family: Tmon;
}

#how_teacher_title_img{
    width: 90%;
}

.teacher_img{
    background-size: 100%;
    background-repeat: no-repeat;
    height: 110vw;
}

.teacher_img img{
    width: 60%;
    height: 60%;
}

#teacher_img_mm{
    padding-top: 7%;
}

#teacher_img_id{
    padding-top: 10%;
}

#teacher_img_th{
    padding:12% 0 0 17%;
    float: left;
}

#teacher_img_vn{
    padding-top: 12%;
}

.teacher_name{
    height: 20vw;
    font-family: Tmon;
    font-size: 11vw;
    font-weight: 700;
}

.teacher_name span{
    font-size:7vw;
}

.teacher_story{
    background-size: 100%;
    background-repeat: no-repeat;
    width: 80%;
    height: 40vw;
    margin-right: 20%;
    padding:17% 0 0 5%;
    color: white;
    text-align: left;
    font-size:11vw;
    font-family: Samlip;
    font-weight: 500;
}

#teacher_story_vn{
    margin-top:30%;
}

.teacher_story_text{
    text-align: left;
    padding-left: 7%;
    font-family: Samlip;
}

.teacher_ow{
    background-size: 100%;
    background-repeat: no-repeat;
    float: right;
    width: 80%;
    height: 20vw;
    margin:15% 0 0 20%;
    padding:20% 5% 0 0;
    color:white;
    text-align: right;
    font-size: 11vw;
    font-family: Samlip;
    font-weight: 500;
}

.teacher_ow_text{
    margin-top: 3%;
    padding-left: 5%;
    text-align: left;
    font-size: 7vw;
    font-family: Samlip;
}

#teacher_ow_text_vn{
    padding-top: 10%;
    font-size:11vw
}

#th_ow_span{
    font-size: 10vw;
}

.intro_video_title{
    background-size: 80%;
    background-repeat: no-repeat;
    height: 15vw;
    margin-top: 20%;
    padding:5% 0 0 5%;
    color: white;
    text-align: left;
    font-size: 8vw;
    font-family: Tmon;
}

.intro_video{
    background-size: 150% 60%;
    background-repeat: no-repeat;
    background-position: -50% -20%;
    padding-top: 15%;
    height: 100vw;
}

.intro_video img{
    width: 90%;
}

.intro_video_text{
    margin: 10% 0 10% 0;
    padding-left: 5%;
    text-align: left;
    font-size:8vw;
    font-family: Samlip;
}

.ad_video{
    position: relative;
    display: inline-block;
    background-size: 70% 30%;
    background-repeat: no-repeat;
    height: 50vw;
    width: 100%;
    margin-top: 5%;
    padding-top: 56.25%;
}

.ad_video iframe{
    position: absolute;
    top: 0; 
    left: 0; 
    right: 0; 
    bottom: 0;
    width: 90%;
    height: 47.85%;
    margin: 43% 0 0 5%;
}

.text_box3{
    text-align: right;
    padding-right: 10%;
    font-size: 8vw;
    font-family: Samlip;
}

.text_box4{
    margin: 20% 0 10% 0;
    font-size: 11vw;
    font-family: Tmon;
}

.other_language{
    background-size: 100%;
    background-repeat: no-repeat;
    width: 100%;
    height: 25vh;
    margin-bottom: 5%;
}

.other_language div:first-child{
    width: 100%;
    padding: 22% 0% 0 0 ;
}

.other_language img{
    display: inline-block;
    width: 30%;
    margin-top: 1%;
}

.bt{
    position: -webkit-sticky;
    position: sticky;
    background-color: white;
    z-index: 50;
    height: 12vh;
    width: 100%;
    bottom: 0;
    padding: 0 0 0 0;
    margin: 0 0 0 0;
    background-color: white;
}

#bt1{
    position: absolute;
    height: 100%;
    width: 50%;
    left: 0%;
}

#bt2{
    position: absolute;
    height: 100%;
    width: 50%;
    right: 0%;
}

.highlight{
    border-radius: 25px 25px 25px 25px;
}

#highlightM_th{
    background-color: #c0ddff;
}

.title_highlight{
    display: inline-block;
    border-radius: 10px 10px 10px 10px;
    padding: 5 10 5 10;
    color: white;
    font-size:11vw
}

.LB{
    display: block;
}

.LB2{
    display: block;
    height: 20px;
}

.LBnone{
    display: none;
}

.LBnone2{
    background-color: white;
}

.bt_add{
	 position: -webkit-sticky;
    position: sticky;
    background-color: white;
    z-index: 50;
    height: 12vh;
    width: 100%;
    bottom: 0;
    padding: 0 0 0 0;
    margin: 0 0 0 0;
    background-color: white;
}

#bt1_add{
	position: absolute;
	bottom: 100%;
	width: 50%;
	left: 50%;
}