.swiper-container {
  width: 100%;
  height: 100%;
  margin-top: -23px;
}
.textmb{
    display: none;
}

.bottom-left-feedback a{
    display: inline-block;
    background: #ef3c3f;
    height: 60px;
    line-height: 65px;
    border-radius: 40px;
    padding: 0 32px;
    color: #ffffff;
    font-size: 25px;
    font-weight: bold;
    text-transform: uppercase;
    /*margin-left: 153px;*/
    -webkit-box-shadow: 0px 4px 20px -3px rgba(0,0,0,0.34);
    -moz-box-shadow: 0px 4px 20px -3px rgba(0,0,0,0.34);
    box-shadow: 0px 4px 20px -3px rgba(0,0,0,0.34);
    transition: 0.25s ease;
}
.bottom-left-feedback a:hover{
    box-shadow: 0 20px 10px -10px rgba(0, 0, 0, 0.2);
    transform: translateY(-5px);
}
.swiper-slide {
  text-align: center;
  font-size: 18px;
  background: #fff;

  /* Center slide text vertically */
  display: -webkit-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  -webkit-align-items: center;
  align-items: center;
}
#feedback{
    background: #ffffff;
    /*padding-bottom: 15px;*/
    padding-top: 60px;
}
/*#feedback .swiper-container .swiper-slide .bg-dt{*/
/*    background: url('../images/dt.png');*/
/*    padding: 15px;*/
/*}*/
.swiper-slide img{
    width: 60%;
}
.owl-carousel{
    position: relative;
}
.owl-prev{
    left: 0;
    position: absolute;
    top: 50%;
    font-size: 50px !important;
    color: #fff !important;
    width: 30px;
    transform: translatey(-100%);
}
.owl-next,.owl-prev{
    outline: unset;
}
.owl-next{
    right: 0px;
    color: #fff !important;
    position: absolute;
    top: 50%;
    font-size: 50px !important;
    width: 30px;
    transform: translatey(-100%);
}
/*[role="button"] {
    width: 80px;
}*/
.swiper-pagination-bullets{
    left: 47%;
}
.swiper-button-next:after, .swiper-button-prev:after {
    font-size: 30px;
}
.swiper-pagination-bullet {
    margin-right: 1px;
}
.video-feedback{
    max-width: 680px;
    margin: 25px auto;
    position: relative;
    z-index: 1;
    border: 8px solid #f4cd1a;
    border-radius: 15px;
    box-shadow: 0px 7px 10px rgba(0,0,0,0.3);
}
.title-fb{
    text-align: center;
    font-size: 35px;
    color: #333;
    font-weight: bold;
    margin-bottom: 15px;
    line-height: 1.3;
    font-family: system-ui;
    margin-top: 15px;
}
.title-fb strong{
    color: #f24445;
}
.video-feedback iframe{
    vertical-align: middle;
    /*height: 100%;*/
    border-radius: 10px;
}

.bg1-feedback{
    background: url(../images/bg1-feedback.png) no-repeat;
    width: 137px;
    height: 102px;
    position: absolute;
    top: 10px;
    left: -90px;
}

.bg2-feedback{
    background: url(../images/bg2-feedback.png) no-repeat;
    width: 96px;
    height: 71px;
    position: absolute;
    bottom: -50px;
    right: -25px;
}

.bg3-feedback{
    width: 818px;
    height: 52px;
    position: absolute;
    background: url(../images/bg3-feedback.png) no-repeat;
    left: 0;
    right: 0;
    margin: 0 auto;
    bottom: -27px;
    background-size: 100%;
}
.title-feedback::before{
    width: 87%;
    height: 180px;
    position: absolute;
    background: url(../images/title-feedback.png) no-repeat;
    /*top: 40%;*/
    left: 16%;
    right: 0;
    margin: 0 auto;
    background-size: 78% 100%;
}
.title-line2{
    margin-left: -58px;
}
.wapper-video-feedback{
    position: relative;
    margin-bottom: 35px;
}

.text-feedback1{
    text-align: center;
    color: #333333;
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 10px;
}

.text-feedback2{
    color: #333333;
    font-size: 24px;
    text-align: center;
    margin-bottom: 20px;
}

.text-feedback3{
    text-align: center;
}

.text-feedback3 span{
    color: #FFFFff;
    font-size: 24px;
    font-weight: bold;
    display: inline-block;
    line-height: 55px;
    height: 55px;
    background: #ef3c3f;
    padding: 0 60px;
    border-radius: 40px;
    -webkit-box-shadow: 0px 4px 20px -3px rgba(0,0,0,0.34);
    -moz-box-shadow: 0px 4px 20px -3px rgba(0,0,0,0.34);
    box-shadow: 0px 4px 20px -3px rgba(0,0,0,0.34);
    transition: 0.4s;
}

.text-feedback3 span:hover{
    box-shadow: 0 20px 5px -10px rgba(0, 0, 0, 0.4);
    transform: translateY(10px);
}
.pd-b-15{
    padding-bottom: 80px;
    padding-top: 90px;
}
.video-subtext-bt strong {
    color: #f24445;
}
.video-subtext{
    line-height: 1.5;
    font-size: 30px;
    font-weight: 800;
}
.video-subtext-bt{
    line-height: 1.4;
    font-size: 26px;
    font-weight: 400;
    color: #162cff;
    border: 2px solid #2f3490;
    padding: 5px;
    font-family: inherit;
    position: relative;
    border-radius: 20px;
}


.d-none{
    display: none;
}
.phone-fee{
    margin-top: 45px;
}
.vi-row{
    margin-top: 35px;
    display: flex;
    justify-content: flex-end;
}
.slidemb{
    width: 70%;
}
@media only screen and (max-width : 812px) {

    .d-none{
        display: block;
    }
    .d-lg-none{
        display: none;
    }
    .item-video{
        height: 300px;
        overflow: hidden;
    }

}
.textmb{
    display: none;
}
@media only screen and (max-width: 1200px) and  (min-width: 1024px){
    .title-line2 {
        top: 2px;
    }
    .title-item-price {
        left: 89%;
        width: 27%;
    }
    .title-head:before {
        content: " ";
        width: 100%;
    }
     .img-tramy .img2-right {
        margin-left: -99px;
        width: 77%;
        margin-bottom: 50px;
        z-index: -111;
    }
    .bottom-left-header a {
        font-size: 20px;
    }
     .bottom-left-header{
        margin-top: -38px;
    }
    .link-step a {
        font-size: 21px;
    }
    .title-line-step {
        font-size: 22px;
    }
    .list-teacher {
        left: 55px;
    }
    .su-dung-nn {
        width: 21%;
    }
    .phantich1 img {
        width: 11%;
    }
    .teacher-tabs-content::after {
        right: 0%;
    }
    .img1 {
        left: 5%;
    }
    #price .bg-container {
        margin-top: 140px;
    }
    .desc-item-price {
        font-size: 21px;
    }
    .img2 {
        left: 85%;
    }
    .box-iteam1 p {
        font-size: 18px;
    }
    .col-h p {
        font-size: 10px;
    }
    .line2-st3 {
        padding-left: 11px;
    }
    .line2 {
        font-size: 12px;
    }
    .step2 {
        margin-left: 48px;
    }
    .step-last {
        left: 62px;
    }
    .line1 {
        padding: 0px;
    }
    .line1-st3 {
        padding: 0px 0px 0px 23px;
    }
    .item-tab-cta-1:after {
        left: 153px;
    }
    .step1 p {
        margin-left: -62px;
    }
    #header {
        padding: 0px;
    }
    .st-cell:nth-child(1) {
        width: 17%;
    }
    .st-cell:nth-child(2), .st-cell:nth-child(3) {
        width: 82.333333%;
    }
    .desc-item-price-2 {
        font-size: 11px;
    }
    .desc-line2 {
        font-size: 14px;
    }
    .list-price {
        font-size: 15px;
    }
    .new-price {
        font-size: 45px;
    }
    .price-content {
        position: absolute;
        left: -32px;
        top: 43px;
        z-index: 0;
        width: 123%;
    }
    .price-content3 {
        top: 47px !important;
    }
    .old-price {
        font-size: 43px;
        margin-bottom: 15px;
    }
    .video-subtext-bt {
        font-size: 24px;
    }
    .title-feedback::before {
        top: 32%;
    }
    .line1-big-title-teacher-des {
        font-size: 24px;
    }
    .bottom-left-feedback a {
        font-size: 25px;
    }
    .swiper-slide img {
        width: 69%;
    }
    .footer{
        display: flex;
        margin-left: 84px;
    }
    .swiper-slide {
        margin-top: 62px;
    }
     .dis-sinh{
        left: -29px;
    }
    .dis-su{
        left: -119px;
    }
    .dis-dia{
        left: -198px ;
    }
}
@media only screen and (max-width: 1000px) and  (min-width: 768px){
    .dis-sinh{
        left: -29px;
    }
    .dis-su{
        left: -119px;
    }
    .dis-dia{
        left: -198px ;
    }
    .title-line2 {
        margin-left: 5px;
    }
    .bottom-left-header{
        display: flex;
    }
    .line3-left-header {
        display: none;
    }
    .col-right-headermb {
        margin-top: 23px;
    }
    .bottom-left-header{    
        margin-top: 30px;
        margin-left: 21%;
        display: -webkit-inline-box;
    }
    .bottom-left-header a {
        font-size: 21px;
        height: 42px;
        line-height: 42px;
        margin-left: -12px;
    }
    .title-head:before {
        content: " ";
        width: 100%;
        height: 130px;
        top: 0%;
        left: -5%;
        right: 0;
        background-size: 100% 100%;
    }
    .dong1mb img {
        width: 6%;
    }
    .link-step {
        padding: 20px 0px 0px 75px;
    }
    .title-box-teacher {
        font-size: 35px;
    }
       .subject-nav-tabs {
        margin-bottom: 20px;
    }
    .teacher-name-tab-content {
        border-top-left-radius: 8px;
        border-top-right-radius: 8px;
    }
    .foo-last img{
        margin-top: 40px;
        width: 67%;
    }
    .bg-container {
        padding-top: 106px;
    }
    .countdown {
        margin-top: 10px;
    }
    .foo-last{
        padding-bottom: 80px;
    }
    .tong-on1, .luyen-de1 {
        border: 1px solid black;
    }
    .lỉne-right-step1 p {
        padding-top: 10px;
    }
    .lỉne-right-step1 {
        font-size: 16px;
    }
    .subject-nav-tabs li a {
        font-size: 22px;
    }
    .teacher-tabs-content::after {
        width: 11%;
        height: 3%;
        right: 0%;
        top: 25%;
    }
    .title-luyen {
        font-size: 28px;
    }
    .beyon-img{
        display: none;
    }
    .beyonmb-img{
        display: initial;
    }
    .secs {
        font-size: 40px;
    }
    .teacher-toan-image img {
        margin-top:  0px; 
    }
    .su-dung-nn ,.tuduy-logic, .phantich  {
        width: 100%;
        margin-bottom: 35px;
    }
    .subject-nav-tabs {
        display: grid;
    }
      #teacher:before {
        bottom: 100px;
    }
    .image-sm-teacher img {
        max-width: 56px;
        float: left;
        bottom: 3px;
        right: 4px;
    }

    .owl-prev span{
        margin-left: -70px;
    }
    .owl-next span{
        margin-right: -70px;
    }
    .content-item-list-des-teacher {
         margin-left: 0px;
         text-align: justify;
    }
    .title-item-list-des-teacher {
        font-size: 17px;
        font-weight: bold;
        text-transform: inherit;
        position: relative;
        z-index: 1;
        padding: 9px 0px;
        margin-left: 60px;
        margin-right: 55px;
    }
    #teacher {
     padding-bottom: 0px;
        background-image: url(../images/bgmb-lay3.png);
        background-position: top left, top right , bottom center;
        background-repeat: no-repeat;
        background-size: 100% 80%;
        padding-top: 40px;
        position: relative;
        background-color: #ffff;
    }
    .teacher-name-tab-content {
        padding-top: 0px;
    }
    .img-new2 {
        top: -5px;
        left: -92px;
    }
    .image-new2 p {
        text-transform: initial;
        font-size: 21px;
        font-weight: 400;
        padding: 15px 0px 15px 7px;
        border: 1.5px solid;
        border-style: dashed;
        line-height: 2;
        text-align: left;
        margin-right: 1px;
        margin-left: -81px;
    }
     .title-sub {
        padding: 0px 5px 0px;
    }
    .name-teacher-nav-list {
        font-size: 8px;
    }
    .cta-teacher-mobile a {
        min-width: 278px;
        font-size: 20px;
        height: 46px;
    }
  
    .bg-container {
        padding-bottom: 30px;
        margin-top: 63px;
    }

    .teacher-name-nav-tab.active::before {
        content: "";
        background-image: url(../images/check.png);
        display: block;
        position: absolute;
        width: 14px;
        height: 14px;
        top: 0px;
        background-size: cover;
        right: -2px;
    }
    .title-list-des-teacher{
        font-size: 12px;
    }
    .list-des-teacher ul li{
        font-size: 12px;
    }
    .title-item-teacher{
        font-size: 12px;
    }
    .teacher-name-nav-tab {
        margin-bottom: 3px;
        /*width: 50px;*/
        /*height: 50px;*/
        margin-left: 10px;
        margin-top: 15px;
    }
    .list-des-teacher{
        display: none;
    }
    .teacher-name-tab-content-bg{
        display: none;
    }
    .big-title-teacher-des{
        font-size: 12px;
        padding-top: 0px;
        /*padding-bottom: 38px;*/
    }
    .teacher-name-nav-tabs {
        top: 32px;
        /* bottom: 545px; */
        margin-bottom: 3px;
        transform: translate(-50%,0%);
        left: 145px;
    }
    .img-teach{
        width: 100%;
        position: relative;
        bottom: 105px;
        left: -72px;
    }
    .image-sm-teacher {
        padding: 1px 1px 0;
        width: 55px;
        height: 55px;
    }
    .wapper-cta-teacher-mobile {
        margin-top: 35px;
        margin-bottom: 35px;
    }
    .image-new2 p {
        font-size: 14px;
        /*text-align: justify;*/
    }
    .list-teacher li a {
        font-size: 15px !important;
        height: 44px !important;
        line-height: 43px !important;
    }
    .tong-onmb ul{
        border: 1px solid #333;
        padding: 10px;
    }
    .muc-tieumb {
        padding-left: 33px !important;
        padding-right: 23px !important;
    }
    .linmb p{
            padding-right: 25px;
    }
    .list-teacher {
        width: 261px;
    }
    .teacher-name-nav-tab.active::before {
        top: 0px;
    }
    .content-step {
        margin-top: -151px;
    }
    .teacher-name-nav-tabs {
        top: 60px
    }
    .cb9mb{
        margin-left: 195px;
        margin-right: 195px;
    }
    .title-price-1mb {
        font-size: 40px;
        line-height: 1.3;
    }
    .teacher-name-nav-tabs {
        padding-top: 7px;
        right: unset;
    }
    .teacher-right1 {
        margin-top: 80px;
    }
    .col-grid {
        margin-bottom: 76px;
        margin-left: 149px;
    }
    .col-sm-6 {
        width: 60%;
    }
    .wapper-cta-teacher-mobile {
        display: block;
        margin-top: 26px;
    }
    .title-item-list-des-teacher {
        margin-left: 220px;
        text-align: center;
        margin-right: 165px;
    }
    .title-item-list-des-teacher {
        font-size: 28px;
        padding: 16px 0 15px 0;
    }
    .content-item-list-des-teacher {
        color: black;
        font-size: 25px;
        line-height: 1.5;
        text-align: left;

    }
    .group-big-teacher, .name-big-teacher {
        font-size: 27px;
    }
    .desc-big-teacher {
        font-size: 28px;
    }
    #teacher:before {
        bottom: 568px;
    }
    .image-new2 p {
        font-size: 20px;
    }
    #header {
        padding: 0 0 210px;
    }
    #step {
        /*background-image: url(../images/bg-after2.png);*/
        position: relative;
        margin-top: -92px;
    }
    #step::after {
        bottom: -19px;
        top: -51px;
    }
    .char {
        left: 132px;
    }
    .char img {
        width: 80%;
    }
    .line1 {
        padding: 0px 0px 0px 16px;
    }
    .step1 p {
        margin-left: -14px;
    }
    .line1-st3 {
        padding: 0px 0px 0px 120px;
    }
    .step2 p {
        margin-left: -25px;
    }
    .line2-st3 {
        padding-left: 119px;
    }
    .step2{
        margin-left: 115px;
    }    
    .step-last {
        left: 110px;
    }
    .line2-lyteacher {
        font-size: 20px;
    }
    .line1-big-title-teacher-des {
        line-height: 1.5;
    }
    .title-sub {
        padding: 0px 50px;
    }
    .group-big-teacher, .name-big-teacher {
        font-size: 25px;
        text-align: center;
    }
    .title-fb {
        font-size: 40px;
    }
    .vi-row {
        width: 100%;
        display: flex;
        margin-left: -128px;
    }
    .textmb{
        display: block;
    }
    .textpc{
        display: none;
    }
    .title-feedback::before {
        /*top: 49%;*/
    }
    .bottom-left-feedback{
        margin-top: 70px;
        margin-left: 90px;
    }
    .line1-footer{
        font-size: 29px;
    }
    .line2-footer{
        font-size: 20px;
    }
    #feedback .swiper-container {
        margin-top: 8px;
    }
    .pd-b-15 {
        padding-top: 0px;
    }
    .item-price {
        margin: 5px 37px;
        padding-left: 19px;
    }
    .old-price {
        margin-bottom: 16px;
    }
    .desc1{
        margin-bottom: -20px;
    }
}
@media only screen and (max-width : 414px) {
    .swiper-pagination-bullets{
        left: 45%;
    }
    .desc-item-price {
        margin-bottom: 1px;
    }
    .title-item-price {
        left: 89%;
        width: 25%;
    }
    .title-fb {
        margin-bottom: 10px;
        line-height: 1.1;
    }
    .title-feedback::before {
       width: 95%;
        height: 69px;
        /*top: 59%;*/
        left: 0%;
        background-size: 100% 100%;
    }
    .video-feedback {
        margin: 15px auto;
    }
    .swiper-slide img {
        margin-top: 10px;
    }
   .bottom-left-feedback a {
        height: 44px;
        line-height: 47px;
        padding: 0 26px;
        color: #ffffff;
        font-size: 15px;
        position: relative;
        text-align: center;
        justify-content: center;
        /*padding-top: 36px;*/
        /*left: 34%;*/
    }
    .pd-b-15 {
        padding-top: 0px;
        padding-bottom: 30px;
    }
    .video-feedback iframe{
        height: 100%;
    }
    .title-fb{
        font-size: 24px;
        line-height: 1.3;
    }
    .video-subtext{
        font-size: 17px;
    }
    .bg3-feedback{
        width: 100%;
        bottom: -27px;
        height: 32px;
    }
    .text-feedback1{
        font-size: 16px;
    }
    .text-feedback2{
        font-size: 14px;
    }
    .text-feedback3 span{
        font-size: 13px;
        padding: 0 22px;
        line-height: 47px;
        height: 47px;
    }
    #feedback{
        padding-bottom: 10px;
        padding-top: 10px;
    }
    .bg1-feedback{
        display: none;
    }
    .bg2-feedback{
        display: none;
    }
    .video-subtext-bt {
        font-size: 13px;
        left: 28px;
        position: relative;
    }
}
@media only screen and (max-width : 768px) {
    .textpc{
        display: none;
    }
    .textmb{
        display: block;
    }
    .vi-row {
        flex-direction: column;
        align-items: center;
    }
}
@media only screen and (max-width : 320px) {
    .title-fb {
        font-size: 20px;
        line-height: 1.3;
    }
    .video-subtext-bt {
        font-size: 18px;
    }
    .title-feedback::before {
        /*top: 59%;*/
    }
    .bottom-left-feedback a {
        left: 23%;
    }
    

}
@media only screen and (max-width : 1300px) {
    .video-subtext-bt {
        top: 14px;
    }
}