@media only screen and (max-width: 1200px) {
  .gr_luyenthi {
    left: calc((100vw - 1190px) / 2);
    width: 100%;
  }
}
@media only screen and (max-width: 1150px) {
  .gr_luyenthi {
    left: calc((100vw - 1120px) / 2);
    width: 100%;
  }
}
@media only screen and (max-width: 1110px) {
  .gr_luyenthi {
    left: calc((100vw - 1000px) / 2);
    width: 100%;
  }
}
@media only screen and (max-width: 911px) {
  .grid-exam-main {
    flex-flow: wrap;
  }
  .right-exam {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 10px;
  }
  .left-result-detail {
    width: 100%;
    border-right: 0px;
    border-bottom: 2px solid #fff;
    padding: 20px 0;
  }
  .right-result-detail {
    width: 100%;
  }
  .box-load-result-detail .d-flex {
    flex-flow: wrap;
  }
  .container-result-detail {
    border: none;
    padding: 0;
  }
  .box-statistics-exam .d-flex {
    flex-flow: wrap;
  }
  .left-statistics-exam {
    width: 100%;
    margin-bottom: 10px;
  }
  .container-statistics-exam {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .right-statistics-exam {
    width: 100%;
  }
  .box-statistics-exam {
    margin-bottom: 20px;
  }
  .title-statistics-exam {
    padding: 20px 10px;
    text-align: center;
  }
  .title-statistics-exam span {
    font-size: 20px;
  }
  .box-btn-statistics-exam {
    justify-content: center;
  }
  .btn-seen-exam,
  .btn-reset-exam {
    width: 100%;
  }
  .search-exam input {
    max-width: 100%;
  }
  .title-exam span {
    font-size: 22px;
  }
  .bgk-xam {
    background: none;
  }
  .box-search {
    padding: 15px 10px;
  }
  .grid-exam {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 10px;
  }
  .flex-exam {
    display: block;
  }
  .flex-exam p:first-child {
    padding: 0;
    margin: 0;
  }
  .flex-exam p:first-child::before {
    display: none;
  }
  .name-exam a {
    font-size: 16px;
    line-height: 20px;
  }
  .btn-search-exam {
    height: 37px;
  }
  .btn-read-textkit-exam {
    display: block;
  }
  .btn-read-textkit-exam {
    position: fixed;
    width: 50px;
    height: 50px;
    background: #f6ab00;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 23px;
    border-radius: 10px;
    left: 20px;
    bottom: 200px;
  }
  .box-title-exam-detail {
    padding: 15px 0;
    grid-template-columns: 1fr;
  }
  .box-title-exam-detail .title-exam span {
    font-size: 20px;
  }
  .box-title-exam-detail .title-exam {
    text-align: center;
    margin-bottom: 10px;
  }
  .img-question-detail.mb-3 {
    max-width: 400px;
  }
  .desc-exam,
  .box-part-1,
  .box-part-2,
  .box-part-3 {
    width: 100%;
    min-width: 550px;
  }
  .right-exam-detail {
    width: 100%;
    padding: 0px;
    overflow: unset;
    overflow-x: scroll;
    max-height: unset;
  }
  .left-exam-detail {
    padding: 0;
    overflow: unset;
    display: none;
  }
  .left-exam-detail.active {
    display: block;
    position: fixed;
    width: calc(100% - 20px);
    right: 10px;
    bottom: 260px;
    background: #000;
    box-shadow: 0 0 4px #f6ab00;
    border-radius: 10px;
    padding: 10px;
    overflow-y: scroll;
    max-height: 400px;
    z-index: 999999;
  }
  .grid-exam-detail {
    grid-template-columns: 1fr;
  }
  .content-main iframe {
    height: auto !important;
    width: auto !important;
  }
  /* .content-main img{height:auto!important;width:auto!important;}
.content-main img{height:auto!important;} */
  .menu_mobi_add,
  .menu_mobi {
    display: block;
    overflow-x: hidden;
  }
  .toolbar {
    display: block;
  }
  .header_logo {
    text-align: center;
    padding: 12px 0;
  }
  .gr_luyenthi {
    left: calc((100vw - 700px) / 2);
    width: 100%;
  }
  .txt_lthi {
    font-size: 14px;
  }
  .txt_lthi1 {
    font-size: 35px;
  }
  .grid_linklthi {
    gap: 10px;
  }
  .gr__llthi {
    font-size: 15px;
  }
  .flex_gioithieu {
    display: flex;
    flex-direction: column-reverse;
    gap: 20px;
  }
  .left_gioithieu {
    width: 100%;
  }
  .right_gioithieu {
    width: 100%;
  }
  .gr_tieuchi.eventchi {
    transform: translateX(0px);
    position: relative;
    z-index: 2;
  }
  .gr_doingu {
    display: flex;
    flex-direction: column;
  }
  .left_doingu {
    width: 100%;
  }
  .right_bdn {
    display: none;
  }
  .flex_khoahoc {
    display: flex;
    flex-direction: column;
  }
  .right_khoc {
    border: none;
    padding: 20px 0;
    width: 100%;
  }
  .left_khoc {
    width: 100%;
  }
  span.switch-title1 {
    font-size: 14px;
  }
  .gr_cnhv {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }
  .img_hocvien {
    width: 100%;
  }
  .grname_hocvien {
    flex: 1;
    padding-left: 0px;
  }
  .desc_hvien::after {
    display: none;
  }
  .camnhanhv .splide__arrows {
    left: calc(100% - 50%);
  }
  .flex_dkntin {
    display: flex;
    flex-direction: column;
  }
  .left_dkntin {
    width: 100%;
  }
  .scrollToTop {
    bottom: 120px;
  }
}
@media only screen and (max-width: 700px) {
  .gr_luyenthi {
    left: calc((100vw - 600px) / 2);
    width: 100%;
  }
}
@media only screen and (max-width: 650px) {
  .gr_luyenthi {
    left: calc((100vw - 600px) / 2);
    width: 100%;
  }
  .right-exam {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .grid-exam {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
}

@media only screen and (max-width: 530px) {
  .grid-exam {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}
@media only screen and (max-width: 420px) {
  .gr_llthi.evenlthiil {
    margin-left: 0px;
  }
  .menu_mobi_add ul li a {
    font-size: 14px;
  }
  /* .gr_luyenthi { bottom: 0; top: unset; transform: translateY(0px); left: calc((100vw - 370px)); } 
*/
  .gr_luyenthi {
    position: relative;
    bottom: 0;
    top: 0;
    transform: translateY(0px);
    left: 0;
    padding: 20px 0;
  }
  /* .txt_lthi1 { font-size: 20px; } */
  .txt_lthi1 {
    font-size: 25px;
    line-height: 1;
  }
  /* .gr_llthi { width: 100%; height: 20px; padding: 0 20px 0; } 
*/
  .gr_llthi {
    width: 100%;
    height: 40px;
    padding: 0 90px 0 20px;
  }
  /* .numb_lthi { display: none; } 
*/
  /* .grid_linklthi { margin-top: 10px; } 
*/
  .txt_lthi {
    color: white;
  }
  .grid_linklthi {
    margin-top: 10px;
    gap: 20px;
  }
  .title_gioithieu {
    font-size: 20px;
  }
  .wrap_gioithieu {
    padding: 20px 0;
  }
  .numb_tieuchi {
    width: 40px;
    height: 40px;
    font-size: 20px;
  }
  .name_tieuchi {
    font-size: 14px;
  }
  .img_tchi {
    padding: 0px;
    border-left: 1px dashed var(--c1);
  }
  .gr_tieuchi::before {
    display: none;
  }
  .wrap_doingu {
    padding: 20px 0;
  }
  .title_gioithieu1 {
    font-size: 20px;
  }
  .slogan_doingu {
    width: 100%;
    max-width: none;
    font-size: 14px;
  }
  .gr_ldnt {
    padding: 10px;
  }
  .name1_doingu {
    font-size: 15px;
  }
  .content_doingu {
    font-size: 14px;
  }
  .right_tdn {
    padding: 20px;
  }
  .name_dn {
    font-size: 17px;
  }
  .desc_dn {
    font-size: 14px;
  }
  .wrap_giangvien {
    padding-top: 20px;
  }
  .name_gvien {
    font-size: 15px;
  }
  .desc_gvien {
    font-size: 14px;
  }
  .btn_xtgvien {
    width: 140px;
    height: 40px;
  }
  .wrap_chonkhoahoc {
    padding: 20px 0;
  }
  .title_ckhoc {
    font-size: 25px;
  }
  .title_ckhoc1 {
    font-size: 15px;
  }
  .swiper-container-wrapper--timeline
    .swiper-pagination-custom
    .swiper-pagination-switch {
    font-size: 18px;
  }
  span.switch-title1 {
    display: none;
  }
  .swiper-container-wrapper--timeline .swiper-pagination-custom {
    margin-bottom: 20px;
  }
  .name_khoc {
    font-size: 18px;
  }
  .desc_khoc {
    margin-top: 15px;
    font-size: 15px;
  }
  .right__xtdt {
    width: 150px;
    height: 40px;
  }
  .wrap_camnhankh {
    padding: 20px 0;
  }
  .name_hvien {
    font-size: 18px;
    margin-bottom: 10px;
  }
  .desc_hvien::before {
    display: none;
  }
  .desc_hvien {
    padding: 10px;
  }
  .desc_hvien {
    padding: 10px;
    height: auto;
    max-height: none;
    min-height: auto;
  }
  .splide__arrows {
    display: none;
  }
  .wrap_sukiensapdr {
    padding: 20px 0;
  }
  .name_skien {
    font-size: 14px;
  }
  .desc_skien {
    font-size: 14px;
  }
  .grid_tintuc {
    margin-top: 20px;
    grid-template-columns: repeat(1, 1fr);
    gap: 0px;
  }
  .wrap_dangkynhantin {
    padding: 20px 0;
  }
  .left_dkntin {
    padding: 20px;
  }
  .title_dknt {
    font-size: 20px;
  }
  .gr_fdknt {
    margin-top: 20px;
  }
  form.validation-newsletter {
    gap: 10px;
  }
  .gr_inputnlt {
    gap: 10px;
    display: flex;
    flex-direction: column;
  }
}