*{
    margin: 0;
    padding: 0;
}

li {}
ul{
    margin-left:20px;
}

ul.dropdown-menu {
    list-style: square;
    padding-left: 10px;
}

.dropdown-menu li {
    padding: 3px;
    margin-left: 20px;
}

div#giaotrinh {
    padding: 40px;
    background: #F3F4FF;
}

span.follow {
    color: red;
    font-weight: bold;
}

#khuyenhoc table.table.table-bordered {
    /* width: 69%; */
    /* margin: auto; */
}

.color_red {
    color: #f68e56;
}

a.btn.btn-dangky {
    background: #f68e56;
    font-weight: bold;
    color: #fff;
    margin-top: 20px;
    font-size: 3em;
    -webkit-box-shadow: 0px 14px 84px -23px rgba(0,0,0,0.75);
    -moz-box-shadow: 0px 14px 84px -23px rgba(0,0,0,0.75);
    box-shadow: 0px 14px 84px -23px rgba(0,0,0,0.75);
    margin-bottom: 20px;
}

div#khuyenhoc {
    margin-top: 41px;
}

.text-header {
    font-weight: bold;
    font-size: 2.5em;
    color: #f68e56;
}

.row2 {
    margin-top: 220px;
}

.thoiluong {
    text-transform: uppercase;
    color: orange;
    font-size: 1.9em;
}

.nenxanh a {
    background: #16479c;
    color: #fff;
    padding: 10px;
    font-weight: bold;
    text-transform: uppercase;
    /* margin: 20px auto; */
}

.nenxanh {
    padding: 20px;
}

.banner h3 {
    text-transform: uppercase;
}

h3.import {
    font-size: 3em;
    font-weight: bold;
    color: #16479c;
}

p.ketthuc {
    margin: 20px auto;
}

.banner6 {
    background: url(../images/banner6.png) no-repeat;
    background-position: top left;
}

.banner5 {
    background: url(../images/banner5.png);
}

.lesson .bigtext {
    font-size: 2em;
    font-weight: bold;
}

.detail {
    margin-left: 6em;
}

.detail a {
    border: solid 2px #000;
    color: #000;
    padding: 0px 1px;
    font-size: 0.9em;
    font-weight: bold;
}

.lesson {
    padding: 5px;
    text-align: center;
    position: absolute;
    top: -15px;
    left: 12px;
}

.mybox {
    margin-bottom: 25px;
    position: relative;
    /* -webkit-box-shadow: 0px 14px 66px -4px rgba(0,0,0,0.75); */
    -moz-box-shadow: 0px 14px 66px -4px rgba(0,0,0,0.75);
    /* box-shadow: 0px 14px 66px -4px rgba(0,0,0,0.75); */
    -webkit-box-shadow: 0px 14px 84px -23px rgba(0,0,0,0.75);
    -moz-box-shadow: 0px 14px 84px -23px rgba(0,0,0,0.75);
    box-shadow: 0px 14px 84px -23px rgba(0,0,0,0.75);
    padding: 15px;
    background: rgba(255,255,255,0.8);
}

.gachngang {
    width: 150px;
    margin: auto;
    border-top: solid 3px;
    margin-top: 0px;
    margin-bottom: 20px;
}

.header-text {
    margin-top: 20px;
    margin: 20px auto;
    text-transform: uppercase;
    font-size: 1.5em;
    margin-bottom: 20px;
}

.banner4 {
    background: url(../images/banner4.jpg);
    background-size: cover;
    background-position-y: -2px;
    background-repeat: no-repeat;
    background-size: 100% 102%;
}

.banner3 {
    background: url(../images/banner3.png);
    background-size: cover;
}

.white {
    color: #fff;
}

.nenden {
    padding: 46px;
    background: rgba(0,0,0,0.5);
}

.banner2 {
    background: #ebebeb;
}

.item {
    text-align: center;
}

.item {
    width: 18%;
}

.item img {
    margin: auto;
}

.flexbox {
    display: flex;
    justify-content: space-around;
}

/*.banner {*/
/*    padding-top: 150px;*/
/*    background: url(../images/Lap-trinh-nhungggg.jpg) no-repeat;*/
/*    background-position-y: -147px;*/
/*    background-size: 100%;*/
/*    !* background-position: top left; *!*/
/*}*/

.banner h4 {
    text-transform: uppercase;
    font-size: 2em;
}
.c{
    margin: 40px auto;
}
.yellow{
    color:#f9b62d;
}
.blue{
    color:#16479c;
}

.bigtext {
    text-transform: uppercase;
    font-weight: bold;
    font-size: 3em;
}

.lesson p {
    margin: 0px;
}
.mau1{
    color:#fff;
    background: #16479c;
}
.bdmau1{
    border-right: solid 1.5em #16479c;
}
.mau2{
    color:#fff;
    background: #00aeef;
}
.bdmau2{
    border-right: solid 1.5em #00aeef;
}
.mau3{
    color:#fff;
    background: #f68e56;
}
.bdmau3{
    border-right: solid 1.5em #f68e56;
}
.mau4{
    color:#fff;
    background: #f7941d;
}
.bdmau4{
    border-right: solid 1.5em #f7941d;
}
.mau5{
    color:#fff;
    background: #fbb202;
}
.bdmau5{
    border-right: solid 1.5em #fbb202;
}
.mau6{
    color:#fff;
    background: #39b54a;
}
.bdmau6{
    border-right: solid 1.5em #39b54a;
}
.banner7{
    background: url(../images/banner9.png);
    background-repeat: no-repeat;
    background-size: cover;
}
@media screen and (max-width: 1200px) {
    .banner{
        padding-top: 60px;
    }
}
@media screen and (max-width: 992px) {
    .banner{
        padding-top: 30px;
    }
}

@media screen and (max-width: 768px) {
    .banner{
        background: none!important;
    }
    .item{
        width: 50%;
    }

    .row2 {
        margin-top: 20px;
    }
}