img {
    max-width: 100%;
}
a {
    text-decoration: none;
}
.top-header-course {
    align-items: center;
    font-size: 16px;
    font-weight: 500;
    padding: 16px 0;
}
.logo img {
    height: 32px;
}
header .intro-btn {
    
}
header .section-inner {
    padding: 10px 0;
}
header .search {
    padding-top: 3px;
}
header .search .input-group-text {
    border: 1px solid #fff;
    border-radius: 0;
    background: transparent;
    color: var(--primary-text-color);
    border-right: none;
}
header .search input#inputSearch {
    background: transparent;
    border-radius: 0 ;
    color: var(--primary-text-color);
    border-left: none;
}
header .search input::placeholder {
    color: var(--primary-text-color);
}
header .search input:focus {
    background: transparent;
}
header .right-content {
    padding-top: 3px;
}
header .btn {
    border-radius: 0;
}
header .navbar .nav-item > a {
    color: #fff;
    font-weight: bold;
}
.home-categories .category {
    margin-top: 15px;
    margin-bottom: 15px;
    border-radius: 5px;
    border: 1px solid #e5e5e5;
    text-align: center;
}
.home-categories .category .cat-image {
    height: auto;
    overflow: hidden;
    border-radius: 5px 5px 0 0;
}
.home-categories .category .cat-name {
    padding: 20px 16px;
}
.home-categories .category .cat-name h3 {
    font-size: 16px;
    font-weight: 500;
    line-height: 24px;
    margin-bottom: 0;
}
.home-categories .category .cat-name a {
    color: #202020;
    text-decoration: none;
}
.home-categories .category .cat-name a:hover {
    color: #000;
}
.feature-courses .course {
    margin-top: 15px;
    margin-bottom: 15px;
    border-radius: 5px;
    border: 1px solid #e5e5e5;
    text-align: center;
}
.feature-courses .course .course-image {
    height: 178px;
    overflow: hidden;
    border-radius: 5px 5px 0 0;
}
.feature-courses .course .course-info {
    padding: 20px 16px;    
}
.feature-courses .course .course-info .course-name {
    font-size: 16px;
    font-weight: 500;
    line-height: 24px;
    margin-bottom: 10px;
}
.feature-courses .course .course-info .course-name a {
    color: #202020;
    text-decoration: none;
}
.feature-courses .course .course-info .course-name a:hover {
    color: #000;
}
.feature-courses .course .teacher svg {
    width: 20px;
    height: 20px;
}
.feature-courses .course .teacher {
    color: #6d6d6d;
}
.feature-courses .course .row-3 table {
    margin-top: 5px;
    width: 100%;
    color: #6d6d6d;
}
.feature-courses .course .row-3 table tr td:first {
    width: 50%;
}
.feature-courses .course .row-4 {
    display: flex;
    justify-content: space-between;
}
.feature-courses .line-bar {
    border-bottom: 1px solid #eee;
    margin: 16px 0;
    position: relative;
}
.feature-courses .price {
    font-weight: 500;
    font-size: 14px;
    line-height: 40px;
    color: #202020;
}
main {
    padding-bottom: 50px;
}
footer .section-inner {
    padding: 25px 0 30px;
}
.course-page .course-heading .course-name {
    font-weight: 500;
    font-size: 24px;
    line-height: 36px;
    margin-bottom: 8px;
}
.course-page .right-content .section-title {
    font-weight: 500;
    font-size: 14px;
    text-transform: uppercase;
    margin-bottom: 16px;
    color: #000;
}
svg {
    width: 20px;
    height: 20px;
}
.course-page .right-content, .course-page .left-content {
    margin-top: 40px;
}
.list-benefits {
    padding: 0;
    list-style: none;
    display: -moz-box;
    display: flex;
    flex-wrap: wrap;
    -moz-box-align: start;
    align-items: flex-start;
    -moz-box-pack: justify;
    justify-content: space-between;
}
.list-benefits li {
    width: 49%;
    margin-bottom: 16px;
    display: -moz-box;
    display: flex;
    -moz-box-align: start;
    align-items: start;
}
.list-benefits li svg {
    margin-right: 16px;
}
.features {
    padding: 24px;
}
.list-features {
    padding: 0;
    list-style: none;
    display: -moz-box;
    display: flex;
    flex-wrap: wrap;
    -moz-box-align: start;
    align-items: flex-start;
    -moz-box-pack: justify;
    justify-content: space-between;
}
.list-features li {
    margin-bottom: 16px;
    display: -moz-box;
    display: flex;
    -moz-box-align: start;
    align-items: start;
}
.list-features li svg {
    margin-right: 16px;
}
.course-page .left-content {
    background-color: #fff;
    border-radius: 5px;
    -webkit-box-shadow: 0 4px 7px rgba(0, 0, 0, .12);
    box-shadow: 0 4px 7px rgba(0, 0, 0, .12);
}
.course-page .left-content .thumbnail {
    border-radius: 5px 5px 0 0;
    overflow: hidden;
}
.course-page .left-content .price {
    padding: 24px;
    font-weight: 500;
    font-size: 24px;
    line-height: 36px;
}
.course-content .left-content .button {
    margin: 0 24px;
    padding: 12px;
    justify-content: center;
    align-items: center;
    text-align: center;
    font-weight: 500;
    font-size: 14px;
    line-height: 20px;
}
.left-content hr {
    margin: 24px 24px 0;
}
.list-lessons {
    padding: 0;
    list-style: none;
    display: block;
}
.list-lessons li {    
    padding: 16px;
}
.list-lessons li:hover {
    background-color: #e5e5e5;
}
.list-lessons li .lesson-title {
    display: flex;
}
.list-lessons li .lesson-duration {
    display: flex;
    font-size: 14px;
}
.list-lessons li svg {
    margin-right: 8px;
    width: 16px;
    height: 16px;
}
.academy-btn {
    border: none;
    padding: 8px 16px;
    cursor: pointer;
    text-align: center;
}
/* Bắt đầu trang học trực tuyến  */
.online-course .section-title {
    margin-bottom: 15px;
    padding: 10px 15px;
}
.online-course .course-sidebar {
    padding: 15px 15px 50px;
    max-height: 600px;
    overflow-y: scroll;
}
.online-course .course-sidebar .chapter-title {
    font-size: 18px;
    line-height: 1.4;
}
.online-course .course-content {
    min-height: 600px;
}
.online-course .course-content .vimeo-iframe {
    width:100%;
    height:442px;
}
.online-course .course-content .youtube-iframe {
    width:100%;
    height:499px;
}
.online-course .course-sidebar .lesson-title {
    text-decoration: none;
    display: flex;
}
.online-course .course-sidebar .lesson-title svg {
    margin-right: 8px;
}
.online-course .course-sidebar .active a {
    color: #fff;
}
.online-course .accordion-button {
    padding: 10px;
}
.online-course .course-sidebar .accordion-body {
    padding: 10px 0 15px;
}
@media screen and (max-width: 780px) {
    .online-course .course-content {
        min-height: 450px;
        background-color: #fff;
        box-shadow: 1px 1px 1px #ccc;
    }
    .online-course .course-content .vimeo-iframe {
        width:100%;
        height:420px;
    }
    .online-course .course-content .youtube-iframe {
        width:100%;
        height:459px;
    }
}
@media screen and (max-width: 600px) {
    .online-course .course-content {
        min-height: 300px;
        background-color: #fff;
        box-shadow: 1px 1px 1px #ccc;
    }
    .online-course .course-content .vimeo-iframe {
        width:100%;
        height:275px;
    }
    .online-course .course-content .youtube-iframe {
        width:100%;
        height:299px;
    }
    .home-categories .category .cat-image {
        height: auto;
    }
    .feature-courses .course .course-image {
        height: auto;
    }
}

/* Nội dung bài giảng */
blockquote {
    border-left: 3px solid rgb(120, 119, 116);
    padding-left: 1rem;
}
.callout-block, .callout {
    width: 100%;
    border-radius: 4px;
    background: rgb(241, 241, 239);
    padding: 16px 16px 16px 12px;
}
.course-content .tab-content {
    border: 1px solid #dee2e6;
    border-top: none;
}
.course-content .tab-pane {
    padding: 25px 20px;
}
/* Support Icons */
.icon-container svg {
    width: 30px;
    height: 30px;
}
.icon-container a img {
    width: 30px;
    height: 30px;
}
.icon-container {
    position: fixed;
    bottom: 100px;
    left: 10px;
    text-align: center;
    transition: background .3s, border .3s, border-radius .3s, box-shadow .3s, transform var(--e-transform-transition-duration, .4s);
}
.icon-container .icons-wrapper {
    display: inline-grid;
}
.icon-container .icons-wrapper .icon-item {
    box-shadow: 0 0 0 4px rgba(255, 255, 255, .2), 0 0 25px 2px rgba(0, 0, 0, .4), inset 0 0 0 15px rgba(255, 255, 155, .4);
    border-radius: 999px;
    margin-bottom: 10px;
}
@keyframes pulsejg1 {
    0% {
        transform: scale(.6);
        opacity: 0;
    }
    50% {
        transform: scale(.6);
        opacity: 0;
    }
    60% {
        transform: scale(.9);
        opacity: .1;
    }
    70% {
        transform: scale(1.1);
        opacity: .25;
    }
    80% {
        transform: scale(1.25);
        opacity: .1;
    }
    100% {
        transform: scale(1.4);
        opacity: 0;
    }
}
.icon-container .icons-wrapper .icon-item:before {
    content: "";
    position: absolute;
    width: 50px;
    height: 50px;
    margin: auto;
    opacity: 0;
    border: 3px solid rgba(255, 255, 255, .5);
    animation: pulsejg1 2s linear infinite;
    border-radius: 999px;
    box-shadow: 0px 0px 15px 10px #000;
    box-sizing: border-box;
    text-align: center;
    display: flex;
}
@keyframes icon-animation {
    0% {
        -webkit-transform: rotate(0) scale(1) skew(1deg);
        transform: rotate(0) scale(1) skew(1deg);
    }
    10% {
        -webkit-transform: rotate(-25deg) scale(1) skew(1deg);
        transform: rotate(-25deg) scale(1) skew(1deg);
    }
    20% {
        -webkit-transform: rotate(25deg) scale(1) skew(1deg);
        transform: rotate(25deg) scale(1) skew(1deg);
    }
    30% {
        -webkit-transform: rotate(-25deg) scale(1) skew(1deg);
        transform: rotate(-25deg) scale(1) skew(1deg);
    }
    40% {
        -webkit-transform: rotate(25deg) scale(1) skew(1deg);
        transform: rotate(25deg) scale(1) skew(1deg);
    }
    50% {
        -webkit-transform: rotate(0) scale(1) skew(1deg);
        transform: rotate(0) scale(1) skew(1deg);
    }
    100% {
        -webkit-transform: rotate(0) scale(1) skew(1deg);
        transform: rotate(0) scale(1) skew(1deg);
    }
}
.icon-container .icons-wrapper .icon-item a {
    background-color: #000;
    animation: icon-animation 2s linear infinite;
    border-radius: 50%;
    margin: 0;
    font-size: 25px;
    line-height: 25px;
    width: 50px;
    height: 50px;
    align-items: center;
    justify-content: center;
    text-align: center;
    cursor: pointer;
    transition: all .3s;
    color: #69727d;
    display: flex;
}
/* End Support Icons */