* {
    margin: 0;
    padding: 0;
}
.row{
    margin: 0;
}
:root {
    --font-family-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --color-main: #0e4a9a;
    --text-font-size: 16px;
    --h1-font-size: 30px;
    --h2-font-size: 20px;
    --h3-font-size: 15px;
    --padding-session: 10px 0px;
        --color1:#fff;
    --color2:transparent;
}

html {
    font-family: var(--font-family-main);
}
body{
    background-color: #fff;
}
.main{
    padding-top: 20px;
}
h4{
    font-size: 1.5rem;
    margin-top: 10px;
    color: #093166;
}
header {
    margin-top: -6px;
    background: transparent;
    padding: 0px 0 0px 0;
    transition: all 350ms ease-out;
}

header .header-info-company {
    display: flex;
    text-decoration: none;
    color: #0e4a9a;
}

.header-info-company .header-logo-company {}

.header-logo-company img {
    width: 80px;
    height: 80px;
}

.header-info-company .header-text-company {}

.header-text-company h1 {
    text-transform: uppercase;
    font-size: 1.3em;
    font-weight: 700;
    color: #0e4a9a;
}

.header-text-company p {
    font-size: 0.8em;
    font-weight: 500;
    text-transform: capitalize;
    margin-top: 5px;
    color: #0e4a9a;
}

header .header-social-company {}

.header-social-company ul{
    display: flex;
    list-style: none;
}

.header-social-company li {}

.header-social-company a {}

.header-social-company a:hover {
    border: solid 1px black;
}

.header-social-company img {
    width: 40px;
    height: 40px;
}
/* header */

.header {
    background: var(--color2);
    box-shadow: 1px 1px 10px 0 rgba(0,0,0,.15);
    position: fixed;
    width: 100%;
    height: auto;
    z-index: 3;
  }
  
  .header ul {
    margin: 0;
    padding: 0;
    list-style: none;
    overflow: hidden;
    background-color: #fff;
  }
  .header li a {
    display: block;
    border-right: 0px solid #f4f4f4;
    text-decoration: none;
    padding: 10px 10px 10px 30px  ;
    padding-left: 30px;
    font-size: large;
    font-weight: 600;
  }
  
  .header li a:hover,
  .header .menu-btn:hover {
    background-color: #f4f4f4;
  }
  
  .header .logo {
    display: block;
    float: left;
    font-size: 2em;
    padding: 10px 0 0px 20px;
    text-decoration: none;
    display: flex;
    color: #0e4a9a;
  }
  h1{
      margin-bottom: 0;
      padding-top: 10px;
  }
  /* menu */
  div#navbarNavDropdown {
    list-style: none;
}
  .header .menu {
    clear: both;
    max-height: 0;
    transition: max-height .2s ease-out;

  }
  
  /* menu icon */
  
  .header .menu-icon {
    cursor: pointer;
    display: inline-block;
    float: right;
    padding: 10px 20px;
    position: relative;
    user-select: none;
    margin-left: 15px;
  }
  
  .header .menu-icon .navicon {
    background: #333;
    display: block;
    height: 2px;
    position: relative;
    transition: background .2s ease-out;
    width: 18px;
  }
  
  .header .menu-icon .navicon:before,
  .header .menu-icon .navicon:after {
    background: #333;
    content: '';
    display: block;
    height: 100%;
    position: absolute;
    transition: all .2s ease-out;
    width: 100%;
  }
  
  .header .menu-icon .navicon:before {
    top: 5px;
  }
  
  .header .menu-icon .navicon:after {
    top: -5px;
  }
  
  /* menu btn */
  
  .header .menu-btn {
    display: none;
  }
  
  .header .menu-btn:checked ~ .menu {
    max-height: 240px;
  }
  
  .header .menu-btn:checked ~ .menu-icon .navicon {
    background: transparent;
  }
  
  .header .menu-btn:checked ~ .menu-icon .navicon:before {
    transform: rotate(-45deg);
  }
  
  .header .menu-btn:checked ~ .menu-icon .navicon:after {
    transform: rotate(45deg);
  }
  
  .header .menu-btn:checked ~ .menu-icon:not(.steps) .navicon:before,
  .header .menu-btn:checked ~ .menu-icon:not(.steps) .navicon:after {
    top: 0;
  }
  
  @media (min-width: 48em) {
    .header li {
      float: left;
    }
    .header li a {
        padding: 10px 30px 10px 30px;
        margin-top: 20px;
    }
    .header .menu {
      clear: none;
      float: right;
      max-height: none;
      background-color:transparent ;
    }
    .header .menu-icon {
      display: none;
    }
  }
/* END_HEADER */









/* Navigation */
.dropdown{
	position: relative;
	display: inline-block;
}
/*sub-menu*/
.dropdown-content{
	display: none;
	position: absolute;
	background-color: #f5f5f5;
	z-index: 1;
	list-style: none;
}

.dropdown:hover .dropdown-content{
	display: block;
}

.dropdown-content a{
	color: black;
	padding: 10px 10px;
	text-decoration: none;
}




/* FLOAT_SOCAIL */
.float-social {
    margin-left: 5px;
    position: fixed;
    right: 1%;
    bottom: 1%;
}

.float-social ul {
    list-style: none;
}

.float-social li {
}

.float-social li a {
    display: flex;
    width: 48px;
    height: 48px;
    justify-content: center;
    align-items: center;
    background: #eaeaea;
    margin-bottom: 5px;
    border-radius: 31px;
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.55), 0 2px 3px rgba(0, 0, 0, 0.4);
    background-image: -webkit-linear-gradient(top, #f9f9f9, #0000001f);
}

.float-social img {
    width: 30px;
    height: 30px;
}

/* END_FLOAT_SOCIAL */

.card-body {
    padding: 0;
}
.padding {
    padding-bottom: 0rem;
}

header{
    position: relative;
    background-image: url(./img_robot/ROBOT.jpeg);
    background-repeat: repeat-X;
    background-size: cover;
}
@media only screen and (max-width: 480px){
    h3{
        font-size: 1em;
    }
  }
  @media only screen and (max-width: 480px){
    .lead{
        display: none;
    }
  }
  @media only screen and (max-width: 480px){
    .sub-heading{
        font-size: 0.65em;
        line-height: 0.5;
    }
    .display-4{
        line-height: 0.5;
    }
  }
  @media only screen and (max-width: 400px){
    .sub-heading1{
        margin-top: 0.5em;
        line-height: 1;
    }
  }
  @media only screen and (max-width: 400px){
    .sub-heading2{
        display: none;
    }
  }
  @media only screen and (max-width: 480px){
    .header-text-company p{
        font-size: 0.4em;
    }
  }
  @media only screen and (max-width: 400px){
    .navbar-1{
        display: none;
    }
  }
  .btn-group-lg>.btn, .btn-lg {
    padding: .5rem 1rem;
    font-size: 1.25rem;
    line-height: 1.5;
    border-radius: .3rem;
    margin-top: 0.2em;
}
/* nav */
  .navbar-nav li:hover > ul.dropdown-menu {
    display: block;
}
.dropdown-submenu {
    position:relative;
}
.dropdown-submenu>.dropdown-menu {
    top:0;
    left:100%;
    margin-top:-6px;
}

/* rotate caret on hover */
.dropdown-menu > li > a:hover:after {
    text-decoration: underline;
    transform: rotate(-90deg);
}

.nav-link:hover{
    background-color: rgb(238, 230, 230);
    border-radius: 10px;
}
.nav-link{
    margin: 10px 20px;
    padding: 15px 20px;
}
.navbar {
    background: var(--color2);
    box-shadow: 1px 1px 10px 0 rgba(0,0,0,.15);
    position: fixed;
    width: 100%;
    height: auto;
    z-index: 3;
  }

  .carousel-control-next, .carousel-control-prev {
    position: absolute;
    top: 0;
    bottom: 0;
    z-index: 1;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
    align-items: center;
    -ms-flex-pack: center;
    justify-content: center;
    width: 15%;
    color: #fff;
    text-align: center;
    opacity: .5;
    transition: opacity 0.15s ease-in-out;
}
.carousel-control-next {
    right: 0;
}


/* Social-float */
nav {
    position: fixed;
    width: 60px;
    top: 50%;
    transition: all 0.3s linear;
    box-shadow: 2px 2px 8px 0px rgba(0, 0, 0, .4)
}

nav ul {
    margin-top: 0;
    margin-bottom: 0rem
}

nav li {
    height: 45px;
    position: relative;
}

nav li a {
    color: #fff !important;
    display: block;
    height: 100%;
    width: 100%;
    line-height: 45px;
    padding-left: 25%;
    border-bottom: 0px solid rgba(0, 0, 0, .4);
    transition: all .3s linear;
    text-decoration: none !important
}

nav li:nth-child(1) a {
    background: #4267B2
}

nav li:nth-child(2) a {
    background: #1DA1F2
}

nav li a i {
    position: absolute;
    top: 14px;
    left: 24px;
    font-size: 15px
}

ul li a span {
    display: none;
    font-weight: bold;
    letter-spacing: 1px;
    text-transform: uppercase
}

nav a:hover {
    z-index: 1;
    width: 180px;
    border-bottom: 1px solid rgba(0, 0, 0, .5);
    box-shadow: 0 0 1px 1px rgba(0, 0, 0, .3)
}

ul li:hover a span {
    padding-left: 30%;
    display: block;
    font-size: 15px
}


.btn-secondary {
    color: #fff;
    background-color: #0E4A9A;
    border-color: #6c757d;
}


/*Start Intro*/

.intro{
    padding-top: 7em;
    padding-bottom: 25px;
    color:rgb(17, 35, 134) ;
  }
  .btn .contact{
      font-family: var(--font-family-main);
      font-size: 20px;
      background-color: rgb(71, 133, 226);
      text-decoration: none;
      color: rgb(235, 220, 139);
      border-radius: 25px;
      padding: 10px 10px 10px 10px;
      
  }
  .btn .contact:hover{
      border: #bdd7fa;
  }
  .btn .test{
      font-family: var(--font-family-main);
      border: solid 1px white;
      margin-left: 15px;
      font-size: 20px;
      text-decoration: none;
      color: white;
      border-radius: 25px;
      padding: 10px 15px 10px 15px;
  }
  .intro .lead{
    margin-left: 0.7em;
  }
  .intro button{
    margin-left: 0.7em;
  }
  
  .header-img img{
      height: 37em;
      width: 34em;
      border-radius: 5px;
      box-shadow: 5px solid #fdfdfd;
  }
  @media only screen and (max-width: 480px){
    .img_background {
      display: none;
    }
  }
/*START MAIN*/
/*Start Section-title*/
.section-title{
    margin-top: 1rem;
    margin-bottom: 1rem;
    font-weight: 500;
  }
  i {
    font-weight: 700;
    font-size: 1.2em;
}
  .section-title-img img{
    padding-top: -5px;
    height: auto;
    max-width: 100%;
  }
  /*End Section-title*/
  
  /*Start Section-Infor-text*/
  .section-infor-text{
    margin-left: 10px;
    font-family: var(--font-family-main);
    background: url(./img_robot/nen_mainsvg.svg);
  }
  .section-infor-img{
    height: auto;
    max-width: 100%;
    margin-bottom: 2%;
    /* padding-top: 60%;
    background:url(./img_scratch/dog_scratch.svg) no-repeat;
    background-size: cover; */
  }
  @media only screen and (max-width: 768px){
    .section-infor-img img{
      width: 26em;
    }
  }
  @media only screen and (max-width: 480px){
    .section-infor-img img{
      width: 18em;
    }
  }
  @media only screen and (max-width: 350px){
    .section-infor-img img{
      width: 15em;
    }
  }
  /*End Infor-text*/
  
  /*Start Section-learn*/
  .section-learn{
    background: url(./img_robot/Ellipse_nho.svg);
    background-repeat: no-repeat;
    background-position-x: left ;
  }
  .section-learn-text{
  }
  .section-learn-img img{
    height: auto;
    width: 100%;
  }
  /*End Section-learn*/
  
  /*Start Section-school*/
  .section-school{
    background: url(./img_robot/Ellipse_nho.svg);
    background-repeat: no-repeat;
    background-position-x: right ;
    margin-bottom: 1.5rem;
  }
  .section-school-text2 .section-school-img img{
    height: auto ;
    width: 100%;
  }
  /*End Section-school*/
  
  /*Start Section-content*/
  .section-content{
    margin-top: 2rem;
    margin-bottom: 2rem;
  }
  .section-content-img img{
    height: auto;
    width: 100%;
    padding: 1em 2.5em;
    margin: 0 4em;
  }
  @media only screen and (max-width: 768px){
    .section-content-img img{
        padding: 0;
        margin: 0;
    }
  }
  @media only screen and (max-width: 480px){
    .section-infor-img img{
        padding: 0;
        margin: 0;
    }
  }
  /*End Setion-content*/
  .display-4 {
    font-size: 3.5rem;
    font-weight: 300;
    line-height: 1;
}


/* Đăng kí */
.l-sidebar {
  margin-bottom: 25px;
}
.c-course-detail__row {
  padding-bottom: 10px;
}
.c-course-detail__row .btn-block {
  margin-bottom: 10px;
}
.btn-primary.is-shadow {
  -webkit-box-shadow: 0 4px 0 #eeeeef;
  -moz-box-shadow: 0 4px 0 #eeeeef;
  box-shadow: 0 4px 0 #eeeeef;
}
.btn-primary1 {
  color: #fff;
  background-color: #EF8318;
  border-color: #EF8318;
}
.btn-group-lg>.btn, .btn-lg {
  font-size: 16px;
  padding: 0.625rem 1.75rem;
}
.btn-secondary.is-shadow {
  -webkit-box-shadow: 0 4px 1px #EF8318;
  -moz-box-shadow: 0 4px 1px #EF8318;
  box-shadow: 0 4px 1px #EF8318;
}
.c-course-detail__row.is-icon {
  padding-left: 30px;
}
.c-course-detail__row {
  padding-bottom: 3px;
}
.c-course-detail__row.is-icon [class*="icon24"] {
  float: left;
  margin: 0 0 0 -30px;
}
.icon24-newspaper {
  background-image: url(./img_scratch/icon24-newspaper.png);
  background-repeat: no-repeat;
  background-position: center center;
}
[class*="icon24"] {
  width: 24px;
  height: 24px;
  display: inline-block;
  vertical-align: middle;
}
.c-course-detail__row label {
  display: block;
  font-weight: 700;
  margin: 0;
}
.c-course-detail__row p {
  margin: 0;
  color: #999;
  line-height: 1.3;
  font-size: 14px;
}
.icon24-age {
  background-image: url(./img_scratch/icon24-age.png);
  background-repeat: no-repeat;
  background-position: center center;
}
.icon24-books {
  background-image: url(./img_scratch/icon24-books.png);
  background-repeat: no-repeat;
  background-position: center center;
}
.icon24-rewind-time {
  background-image: url(./img_scratch/icon24-rewind-time.png);
  background-repeat: no-repeat;
  background-position: center center;
}
.icon24-student {
  background-image: url(./img_scratch/icon24-student.png);
  background-repeat: no-repeat;
  background-position: center center;
}
.icon24-warning {
  background-image: url(./img_scratch/icon24-warning.png);
  background-repeat: no-repeat;
  background-position: center center;
}
.icon24-manual {
  background-image: url(./img_scratch/icon24-manual.png);
  background-repeat: no-repeat;
  background-position: center center;
}
@media (min-width: 992px){
  .c-course-detail {
      padding: 30px;
      position: fixed;
      z-index: 2;
      margin-top: -620px;
      right: 2%;
      min-height: 490px;
      width: 300px;
      background: #fff;
      -moz-border-radius: 4px;
      -webkit-border-radius: 4px;
      border-radius: 4px;
      -webkit-box-shadow: 0 0 5px rgba(0,0,0,0.15);
      -moz-box-shadow: 0 0 5px rgba(0,0,0,0.15);
      box-shadow: 0 0 5px rgba(0,0,0,0.15);
  }
  .l-main{
      width: 82%;
  }
}

.c-block {
  padding: 25px 0;
}
/* end đăng kí */

/* Dialog */
.modal-dialog {
  position: relative;
  width: auto;
  z-index: 2;
  margin: .5rem;
  pointer-events: none;
}
.modal.show .modal-dialog {
  -webkit-transform: none;
  transform: none;
}
.modal.fade .modal-dialog {
  transition: -webkit-transform .3s ease-out;
  transition: transform .3s ease-out;
  transition: transform .3s ease-out,-webkit-transform .3s ease-out;
  -webkit-transform: translate(0,-50px);
  transform: translate(0,-50px);
}

.modal-content {
  position: relative;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-direction: column;
  flex-direction: column;
  width: 100%;
  pointer-events: auto;
  background-color: #fff;
  background-clip: padding-box;
  border: 1px solid rgba(0,0,0,.2);
  border-radius: .3rem;
  outline: 0;
  margin-top: 10em;
}
.custom-modal .modal-header {
  padding: 15px;
  border-bottom: none;
  position: relative;
  z-index: 1;
}
.modal-header {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: start;
  align-items: flex-start;
  -ms-flex-pack: justify;
  justify-content: space-between;
  padding: 1rem 1rem;
  border-bottom: 1px solid #dee2e6;
  border-top-left-radius: .3rem;
  border-top-right-radius: .3rem;
}
.custom-modal .modal-title {
  text-transform: uppercase;
  font-size: 18px;
  font-weight: 700;
  padding-left: 15px;
  position: relative;
  z-index: 1;
  min-height: 42px;
}
.modal-title {
  margin-bottom: 0;
  line-height: 1.5;
}

.custom-modal .modal-title:before {
  content: "";
  position: absolute;
  z-index: 2;
  left: 0;
  top: 0;
  width: 5px;
  height: 41px;
  background-image: url(./img_scratch/box-dot.png);
  background-position: center center;
  background-repeat: no-repeat;
}
.modal-header .close {
  padding: 1rem 1rem;
  margin: -1rem -1rem -1rem auto;
}
.custom-modal .modal-header .close {
  opacity: 1;
  background-image: url(../images/close.png);
  background-position: center center;
  background-repeat: no-repeat;
  position: absolute;
  z-index: 3;
  top: 5px;
  right: 5px;
  margin: 0;
}
[type=button]:not(:disabled), [type=reset]:not(:disabled), [type=submit]:not(:disabled), button:not(:disabled) {
  cursor: pointer;
}
.close {
  float: right;
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: #000;
  text-shadow: 0 1px 0 #fff;
  opacity: .5;
}
button.close {
  padding: 0;
  background-color: transparent;
  border: 0;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}
.custom-modal .modal-body {
  padding: 15px;
}
.modal-body {
  position: relative;
  -ms-flex: 1 1 auto;
  flex: 1 1 auto;
  padding: 1rem;
}
.c-modal-support__banner {
  display: none;
}
.c-modal-support__banner img {
  width: 100%;
  height: auto;
}
.c-modal-support .b-form .form-group {
  margin-bottom: 8px;
}
.c-modal-support .b-form .form-group.is-tel {
  position: relative;
  z-index: 1;
}
.c-modal-support .b-form .form-group {
  margin-bottom: 8px;
}
.c-modal-support .b-form .form-group.is-tel .c-support-form__pre {
  position: absolute;
  z-index: 3;
  top: 5px;
  line-height: 34px;
  height: 34px;
  left: 0;
  width: 58px;
  text-align: center;
  border-right: 1px solid #000;
}
@media (min-width: 992px){
.c-modal-support .modal-content {
  padding-left: 300px;
  min-height: 537px;
}
}
@media (min-width: 992px){
  .c-modal-support .modal-dialog {
      max-width: 800px;
  }
}
@media (min-width: 576px){
  .modal-dialog {
      max-width: 400px;
      margin: 1.75rem auto;
  }
}
@media only screen and (max-width: 576px){
  .modal-dialog {
      max-width: 400px;
  }
}
@media only screen and (max-width: 400px){
  .modal-dialog {
      max-width: 300px;
      margin: 3.75rem auto;
  }
}
@media only screen and (max-width: 768px){
  .c-course-detail__row.is-icon{
      padding-left: 50px;
  }.c-course-detail__row{
      /* padding-left: 30px; */
  }
}
@media only screen and (max-width: 400px){
  .c-course-detail {
      max-width: 250px;
  }
  .c-course-detail__row.is-icon{
      padding-left: 50px;
  }.c-course-detail__row{
      padding-left: 50px;
  }
}
/*End Dialog*/