body {
  margin: 0;
  padding: 0;
  font-weight: 400;
  font-family: "Roboto", sans-serif;
  background: unset !important;
}
@font-face {
  font-family: 'Nunito';
  src: url(Nunito-Regular.ttf);
}
#lazy-loading{
  position: fixed;
    width: 100vw;
    height: 100vh;
    z-index: 99999;

    display: none;
    justify-content: center;

    align-items: center;
    background: #685f5f30;
}
#lazy-loading img{
  width: 200px;
}
.vk-content {
  background: white;
}
.vk-content button[data-toggle="collapse"]{
  padding: 7px 10px;
    border-radius: 5px;
    border: unset;
    background-color: #14c38e;
    /* border-color: #14c38e; */
    color: white;
    /* box-shadow: unset; */
    margin-bottom: 10px;
}
a {
  text-decoration: none;
}
.btn-practice:hover {
  color: #14c38e !important;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}
.exam img{
  max-width: 100%;
  object-fit: contain;
}
.title__text {
  font-size: 36px;
  line-height: 42px;
  font-weight: 500;
  color: #363636;
  margin-bottom: 50px;
}

.student {
  margin-top: 70px;
}
.student .topic__all {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15%, 1fr));
  grid-gap: 30px;
  margin-bottom: 100px;
  width: 100%;
}

.primary__school .topic-1 {
  background-color: #ffcc8f;
  color: #fff;
}
.primary__school .topic-1 .discover {
  color: #c09867;
}

.primary__school .topic-2 {
  background-color: #14c38e;
  color: #fff;
}
.primary__school .topic-2 .discover {
  color: #14c38e;
}

.primary__school .topic-3 {
  background-color: #ff8b8b;
  color: #fff;
}
.primary__school .topic-3 .discover {
  color: #ff8b8b;
}

.primary__school .topic-4 {
  background-color: #0aa1dd;
  color: #fff;
}
.primary__school .topic-4 .discover {
  color: #0aa1dd;
}

.primary__school .topic-5 {
  background-color: #9eb23b;
  color: #fff;
}
.primary__school .topic-5 .discover {
  color: #9eb23b;
}

.topic {
  text-align: center;
  border-radius: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.topic .title {
  margin-top: 30px;
  font-size: 48px;
  line-height: 48px;
  /* margin-bottom: 18px; */
  font-family: Nunito;
  font-style: normal;
  font-weight: 800;
}
.topic .number-class {
  position: relative;
  font-size: 80px;
  line-height: 75px;
  margin-bottom: 30px;
  font-family: Nunito;
  font-style: normal;
  font-weight: 800;
  padding: 15px 25px;
  /* text-align: center; */
  margin-top: 30px;
}
.topic .number-class::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: #fff;
  opacity: 15%;
  top: 0;
  left: 0%;
  border-radius: 20px;
}
.topic .discover {
  font-size: 14px;
  line-height: 16px;
  background-color: #fff;
  text-transform: uppercase;
  padding: 14px 34px;
  border-radius: 30px;
  display: inline-block;
  margin-bottom: 30px;
}

.different {
  background-color: #fefbf5;
  margin-bottom: 100px;
}
.different .container {
  padding-top: 70px;
  padding-bottom: 90px;
}
.different .topic__all {
  margin-bottom: 0;
}

.topic-6 {
  background-color: #cdf0ea;
  color: #5c8780;
}
.topic-6 .discover {
  color: #5c8780;
}

.topic-7 {
  background-color: #f2d7d9;
  color: #b7868a;
}
.topic-7 .discover {
  color: #b7868a;
}

.topic-8 {
  background-color: #d3eca7;
  color: #668431;
}
.topic-8 .discover {
  color: #668431;
}

.topic-9 {
  background-color: #cddeff;
  color: #3f598b;
}
.topic-9 .discover {
  color: #3f598b;
}

.topic-10 {
  background-color: #eeeeee;
  color: #777877;
}
.topic-10 .discover {
  color: #777877;
}

.topic-11 {
  background-color: #e2eff1;
  color: #79a1a7;
}
.topic-11 .discover {
  color: #79a1a7;
}

.topic-12 {
  background-color: #fff4e1;
  color: #ad9263;
}
.topic-12 .discover {
  color: #ad9263;
}

.topic-dh {
  background-color: #fff2f2;
  color: #cb767c;
}
.topic-dh .number-class {
  font-size: 34px;
  line-height: 40px;
  margin-top: 94px;
}
.topic-dh .discover {
  color: #cb767c;
}

.class__one {
  background: url("../img/Group3.png");
  margin-top: 50px;
}
.class__one .exam__all {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(45%, 1fr));
  grid-gap: 87px;
  width: 100%;
}
.class__one .topic .title {
  padding-top: 30px;
  padding-bottom: 15px;
}
.class__one .topic .discover {
  margin-bottom: 50px;
  margin-top: 15px;
}
.class__one .vn__math {
  background: url(../img/E-math.png) no-repeat scroll 0 0;
  background-color: #cddeff;
  color: #336b74;
  border-radius: 5px;
}
.class__one .vn__math .discover {
  color: #336b74;
}

.english__math {
  border-radius: 5px;
  background: url(../img/E-math.png) no-repeat scroll 0 0;
  background-color: #fff4e1;
  color: #a16a27;
}
.english__math .discover {
  color: #a16a27;
}

.detail {
  margin-top: 20px;
}
.detail .english__math {
  margin-bottom: 60px;
  padding-bottom: 90px;
}
.detail .english__math h6 {
  font-size: 20px;
  line-height: 27px;
  padding-top: 98px;
    font-family: Nunito;
  font-style: normal;
font-weight: 800;
}
.detail .english__math h6.chapters {
  padding-top: 0;
  margin-top: 30px;
}
.detail .english__math .title {
  font-size: 48px;
  line-height: 65px;
}

.information__text {
  font-size: 21px;
  line-height: 25px;
  color: #000;
  font-weight: 500;
  margin-bottom: 25px;
}

.course__information {
  margin-bottom: 57px;
}
.course__information .content {
  border: 1px solid #e5e5e5;
  padding: 25px;
}
.course__information .content p {
  font-size: 16px;
  line-height: 30px;
}
.course__information .content p:first-child {
  margin-bottom: 40px;
}

table,
td {
  padding: 20px;
  width: 100%;
}

tr {
  border: 1px solid #e5e5e5;
  border-radius: 5px 5px 0 0;
  display: flex;
  width: 100%;
  align-items: center;
}

td {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-radius: 5px 5px 0 0;
}

td a {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  line-height: 1.4;
}
td a img {
  margin-top: -3px;
}
td a:hover {
  color: #14c38e;
}

td.active a:hover {
  color: white;
}
.exam__details {
  margin-top: 30px;
  background: url("../img/Group3.png");
}
.dichde{
  padding: 6px 15px;
  margin-bottom: 10px;
  border-radius: 5px;
  background: #39bb83;
  color: #fff;
  border: none;
}
.exam__details .container {
  margin: 0;
  max-width: 100%;
  width: 100%;
  padding: 0 60px;
}
.exam__details .test {
  display: flex;
  justify-content: space-between;
  max-width: 100%;
  width: 100%;
}
.exam__details .test .exercise {
  width: 56%;
}

.exam__details .test .lessons__all {
  width: 40%;
}

.video {
  background-color: #f8f8f8;
  margin-bottom: 40px;
  position: relative;
  /* padding-bottom: 56.25%; */
  padding-top: 0;
  height: 0;
  overflow: hidden;
  width: 100%;
  max-width: 100%;
  height: auto;
}
.video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  margin: 0;
}

.exam__information {
  margin-bottom: 100px;
  display: flex;
  justify-content: space-between;
  /* align-items: center; */
  margin-top: 25px;
}
.exam__information h6 {
  font-weight: 500;
  font-size: 24px;
  line-height: 28px;
  color: #000;
}

.btn-practice {
  border: 2px solid #14c38e;
  color: #14c38e;
  padding: 15px 48px;
  margin-left: 30px;
  border-radius: 5px;
  display: inline-block;
  margin-bottom: 20px;
}
.btn-practice.active {
  background-color: #14c38e;
  color: #fff;
}
.btn-practice.show{
  position: absolute;
  padding: 15px 60px;
}
.btn-practice.active:hover {
  color: #fff !important;
}

.img-white {
  display: none;
}

tr .active {
  background-color: #14c38e;
  color: #fff;
}
tr .active .img-black {
  display: none;
}
tr .active .img-white {
  display: block;
}

.exam {
  background: url("../img/Group3.png");
}

.title__exam {
  display: flex;
  justify-content: space-between;
  /* align-items: center; */
  margin-top: 40px;
  margin-bottom: 25px;
}
.title__exam h6 {
  display: flex;
  color: #363636;
}
.title__exam h6 span {
  color: #363636;
  font-size: 24px;
  line-height: 28px;
}
.title__exam h6 span:first-child {
  white-space: nowrap;
}
.title__exam p {
  padding: 20px 22px;
  background-color: #f8f8f8;
  border: 1px solid #e5e5e5;
  border-radius: 5px;
  display: flex;
  align-items: center;
  color: #000;
  font-size: 17px;
  line-height: 20px;
}
.title__exam span {
  color: #e76565;
  font-size: 32px;
  line-height: 38px;
  margin-left: 12px;
}

.question {
  background-color: #f8f8f8;
  border: 3px solid #14c38e33;
  border-radius: 10px;
  margin-bottom: 40px;
}
.question .form-check label{
  text-transform: unset;
  font-weight: unset;
}
.question h3 {
  font-size: 32px;
  line-height: 38px;
  font-weight: 500;
  color: #000;
  margin-bottom: 18px;
}
.question p {
  font-size: 19px;
  line-height: 30px;
  color: #363636;
  font-weight: 300;
  margin-bottom: 25px;
}
.question .the__answers {
  margin-top: 40px;
  display: flex;
  justify-content: space-between;
  width: 100%;
}
.question .the__answers .answers {
  width: 25%;
}

.answers {
  width: 100%;
  display: flex;
  align-items: center;
  cursor: pointer;
}
.answers.active {
  color: #14c38e;
}
.answers.active .audio {
  border: 1px solid #14c38e;
}
.answers.active .audio::after {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  position: absolute;
  background-color: #14c38e;
  top: 25%;
  left: 20%;
}

.container_as {
  padding: 41px 49px;
}

.guide_delete {
  display: none;
}
.guide_All span {
  color: #363636;
  font-size: 17px;
  line-height: 20px;
  font-weight: 600;
}
.guide_All p {
  color: #000;
  font-size: 17px;
  line-height: 20px;
  margin-top: 28px;
  margin-bottom: 27px;
}
.guide_delete.active {
  display: block;
}

.audio {
  border: 1px solid #000;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  margin-right: 10px;
  position: relative;
}

.result-close {
  background-color: #fae4e4 !important;
}
.result-close .result_as h6 {
  color: #e01c1c !important;
}
.result-close .result_as .guide {
  color: #e01c1c !important;
  font-size: 17px;
  line-height: 20px;
  text-decoration: underline;
}

.result {
  display: none;
  background-color: #d7faf0;
  margin-bottom: 32px;
}
.result-close {
  display: none;
  background-color: #d7faf0;
  margin-bottom: 32px;
}
.result.active {
  display: block;
}
.result-close.active {
  display: block;
}
.result .result_as {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.result-close .result_as {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.result .result_as h6 {
  display: flex;
  align-items: center;
  color: #2ea024;
}
.result-close .result_as h6 {
  display: flex;
  align-items: center;
  color: #2ea024;
    font-family: Nunito;
  font-style: normal;
font-weight: 800;
}
.result .result_as h6 img {
  margin-right: 10px;
}
.result-close .result_as h6 img {
  margin-right: 10px;
}
.result .result_as .guide {
  color: #0fa376;
  font-size: 17px;
  line-height: 20px;
  text-decoration: underline;
}

.change__post {
  width: 100%;
  display: flex;
  justify-content: space-between;
}
.change__post .btn-practice {
  margin-left: 0;
}
.change__post .btn-practice.no_back {
  opacity: 30%;
}

.pratice__details {
  background: url("../img/Group3.png");
  margin-top: 80px;
  height: 100vh;
}
.pratice__details_title {
  font-size: 30px;
  line-height: 42px;
  color: #000;
  font-weight: 500;
  margin-bottom: 25px;
}
.pratice__details p {
  font-size: 16px;
  line-height: 30px;
  color: #363636;
  margin-bottom: 34px;
}
.pratice__details .the__answers {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 58px;
}
.pratice__details .change__post {
  display: flex;
  justify-content: center;
  align-items: center;
}

.form-check label {
  padding-left: 16px;
  margin-bottom: 0;
  font-weight: 500;
  font-size: 18px;
  text-transform: uppercase;
}

.study__program {
  margin-bottom: 100px;
}
/* .d-none {
  display: none !important; } */

input + label::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 15px;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  border: 1px solid #696969;
  border-radius: 50%;
}

input:checked + label::before {
  width: 10px;
  height: 10px;
  box-shadow: 0 0 0 4px #fff, 0 0 0 6px #14c38e;
  background-color: #14c38e;
  border: 1px solid #14c38e;
  left: 20px;
}

input:checked + label {
  color: #14c38e;
  font-weight: 700;
}

.form-check {
  width: 23%;
  position: relative;
  display: block;
  background-color: transparent;
  border-radius: 5px;
  padding: 27px 29px;
  margin-bottom: 20px;
  background: #F8F8F8;
}
.practice{
  text-align: right;
}
.container_history {
  max-width: 1018px;
  margin: 40px auto 100px auto;
}
.container_history .weak {
  color: #e76565;
}
.container_history .good {
  color: #0f8910;
}
.container_history .rather {
  color: #e8830c;
}
.container_history h3 {
  font-size: 24px;
  line-height: 30px;
  font-weight: 400;
  margin-bottom: 45px;
}
.container_history table,
.container_history td,
.container_history th {
  text-align: left;
}
.container_history table {
  border-collapse: collapse;
  width: 100%;
}
.container_history th,
.container_history td {
  padding: 15px;
  border: unset;
  width: 20%;
}
.exam_history .container_history th{
  width: auto;
}
.container_history th:nth-child(2),
.container_history td:nth-child(2){
  width: 50%;
}
.container_history tr td:first-child{
  min-width: 100px;
}
.container_history td {
  vertical-align: middle;
  display: revert;
  width: auto;
  font-size: 16px;
  line-height: 19px;
  font-weight: 400;
  min-width: 85px;
}
.container_history td img {
  display: inline-block;
  vertical-align: middle;
  margin-right: 20px;
}
.container_history td img.avatar {
  width: 40px;
}
.container_history tr td:first-child {
  color: #058dc3;
}
.container_history tr td:last-child a {
  color: #058dc3;
}

.title__charts {
  display: flex;
  justify-content: space-between;
}

.charts tr td:first-child {
  color: #000;
  font-weight: 500;
  font-size: 16px;
  border: unset;
}

.charts tr td:last-child {
  color: #000;
  font-weight: 500;
  font-size: 16px;
}

.charts tr td {
  width: 20%;
  border-radius: 0;
}

.charts tr:nth-child(even) {
  background-color: #f2f2f2;
}

.charts tr:nth-child(2) {
  background-color: #ffd9d9;
}
.charts tr:nth-child(2) td {
  color: #e3211e;
}

.charts tr:nth-child(3) {
  background-color: #d3ffed;
}
.charts tr:nth-child(3) td {
  color: #1f9120;
}

.charts tr:nth-child(4) {
  background-color: #fff5d2;
}
.charts tr:nth-child(4) td {
  color: #dd722a;
}

.table {
  width: auto;
  overflow: auto;
  background-color: #fff;
  position: relative;
}
.table table {
  /* position: relative; */
}
.table table .me {
  background-color: #14c38e99;
}
.table table .active_me.active {
  width: auto;
  background-color: #14c38e99;
  position: absolute;
  z-index: 5;
  bottom: 165px;
  width: 100%;
}
.table table .active_me.active_remove {
  display: none;
}

.month {
  width: 120px;
}

.select2-search--dropdown {
  display: none !important;
}

.select2-container--open .select2-dropdown--below {
  margin-top: -47px;
  border-top: 1px solid #aaa !important;
}

.select2-container--default .select2-results > .select2-results__options {
  max-height: 100%;
}
.table_croll {
  background-color: #fff;
}
.vk-page {
  background-color: #f8f8f8;
}

@media (max-width: 1920px) {
  .container {
    max-width: 1200px;
    margin: 0 auto;
  }
}

@media (max-width: 1400px) {
  .container {
    max-width: 1200px;
    margin: 0 auto;
  }
  .exam__details .test .exercise {
    width: 68%;
  }
  .exam__details .test .lessons__all {
    width: 30%;
  }
}

@media (max-width: 1200px) {
  .container {
    max-width: 1050px;
    margin: 0 auto;
  }
  .container_history {
    max-width: 100%;
    margin: 40px auto 100px auto;
    padding: 0 15px;
  }
  .exam__information {
    width: 100%;
    flex-wrap: wrap;
    margin-bottom: 25px;
  }
  .exam__information h6 {
    width: 100%;
    margin-bottom: 25px;
  }
  .exam__information .practice {
    width: 100%;
    display: flex;
    justify-content: center;
  }
}

@media (max-width: 992px) {
  .container {
    max-width: 960px;
    margin: 0 auto;
  }
  .student .topic__all {
    grid-template-columns: repeat(auto-fill, minmax(24%, 1fr));
  }
  .exam__information {
    flex-wrap: nowrap;
    margin-bottom: 50px;
  }
  .exam__information h6 {
    width: auto;
    margin-bottom: 0px;
  }
  .exam__information .practice {
    width: auto;
  }
  .exam__details .test {
    flex-wrap: wrap;
  }
  .exam__details .test .exercise {
    width: 100%;
  }
  .exam__details .test .lessons__all {
    width: 100%;
  }
  .charts tr td {
    width: auto;
  }
}

@media (max-width: 848px) {
  .container {
    max-width: 799px;
    margin: 0 auto;
  }
}
@media (min-width: 769px){
  .exam__details .test .exercise > iframe{
    width: 100%;
    height: 500px;
  }
}

@media (max-width: 768px) {
  .exam__details .test .exercise > iframe{
    width: 100%;
  }
  .container {
    max-width: 720px;
    margin: 0 auto;
  }
  .student .topic__all {
    grid-template-columns: repeat(auto-fill, minmax(34%, 1fr));
    grid-gap: 50px;
  }
  .exam__information {
    width: 100%;
    flex-wrap: wrap;
  }
  .exam__information h6 {
    width: 100%;
    margin-bottom: 50px;
  }
  .exam__information .practice {
    width: 100%;
    justify-content: space-between;
  }
  .exam__information .practice .btn-practice {
    margin-left: 0;
  }
  .exam__details .container {
    padding: 0 15px;
  }
  .pratice__details .the__answers {
    flex-wrap: wrap;
  }
  .pratice__details .the__answers .form-check {
    width: 45%;
    margin-bottom: 20px;
  }
  .title__exam h6 {
    display: flex;
  }
  .title__exam h6 {
    display: flex;
    color: #363636;
  }
  .title__exam h6 span {
    font-size: 20px;
  }
  .title__exam p {
    padding: 14px 16px;
    font-size: 15px;
  }
  .title__exam span {
    font-size: 27px;
  }
  .question h3 {
    font-size: 26px;
    margin-bottom: 16px;
  }
  .question p {
    font-size: 16px;
    margin-bottom: 20px;
  }
  .question .the__answers {
    margin-top: 20px;
  }
  .exam .form-check {
    width: 23%;
    position: relative;
    display: block;
    /* background-color: transparent; */
    border-radius: 5px;
    padding-left: 25px;
  }
  .container_as {
    padding: 25px 30px;
  }
  .table_croll {
    overflow-x: scroll;
  }
  .container_history table {
    width: 700px;
  }
  .form-check label {
    font-size: 16px;
  }
  .title__exam {
    display: block;
  }
  .title__exam p {
    width: 30%;
    float: right;
  }
  .form-check {
    padding: 15px 29px;
  }
}

@media (max-width: 576px) {
  .exam__information h6{
    margin-bottom: 25px;
  
  }
  .exam__information{
    margin-bottom: 25px;
  }
  .topic .title{
    font-size: 40px;
  }
  .container {
    max-width: 540px;
    margin: 0 auto;
  }
  .student .topic__all {
    grid-template-columns: repeat(auto-fill, minmax(34%, 1fr));
    grid-gap: 20px 20px;
  }
  .title__exam h6 span {
    font-size: 18px;
  }

  .title__exam p {
    padding: 10px 12px;
    font-size: 15px;
  }
  .title__exam span {
    font-size: 22px;
  }
  .question h3 {
    font-size: 22px;
    margin-bottom: 12px;
  }
  .question p {
    font-size: 16px;
    margin-bottom: 20px;
  }
  .pratice__details .the__answers .form-check {
    width: 100%;
    margin-bottom: 20px;
  }
  .change__post {
    width: 100%;
    display: flex;
    justify-content: space-between;
  }
  .change__post .btn-practice {
    margin-left: 0;
  }
  .change__post .btn-practice.no_back {
    opacity: 30%;
  }
  .exam .the__answers .form-check {
    width: 100% !important;
  }
  .container_history table {
    width: 600px;
  }
}

.exam .change__post .btn-practice {
  padding: 10px 20px;
}

.exam .the__answers {
  flex-wrap: wrap;
}
.exam .the__answers .form-check {
  width: 45%;
}

@media (max-width: 575px) {
  .container {
    max-width: 100%;
  }
}

@media (max-width: 510px) {
  .container {
    max-width: 100%;
    padding: 0 30px;
  }
  .student .topic__all {
    grid-template-columns: repeat(auto-fill, minmax(50%, 1fr));
    grid-gap: 20px 20px;
  }
  .container_history h3 {
    font-size: 18px;
  }
}

@media (max-width: 400px) {
  .btn-practice {
    border: 2px solid #14c38e;
    color: #14c38e;
    padding: 15px 28px;
    border-radius: 5px;
  }
  .title__exam h6 span {
    font-size: 14px;
  }
  .title__exam p {
    padding: 8px 10px;
    font-size: 13px;
  }
  .title__exam span {
    font-size: 18px;
  }
  .question h3 {
    font-size: 18px;
    margin-bottom: 0px;
  }
  .question p {
    font-size: 12px;
    line-height: 25px;
    margin-bottom: 18px;
  }
  .question .the__answers {
    margin-top: 30px;
    flex-wrap: wrap;
  }
  .container_as {
    padding: 15px 10px;
  }
}