* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
    scroll-behavior: smooth;
}

.orangered {
    color: #ff4500;
}

.blue {
    color: #1939B3;
}

.container {
    width: 1200px;
    margin: auto;
}

.hero-course {
    width: 100%;
    height: 100vh;
    background-size: cover;
    background-image: url('../img/background/banner-img1.png');
    background-size: cover;
    margin-bottom: 100px;
}

.control-banner-course {
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: space-between;
    margin-bottom: 50px;
}

.left-banner-course {
    width: 600px;
    height: 100vh;
    display: flex;
    align-items: center;
}

.control-in-left>h1 {
    font-size: 6em;
    background-image: linear-gradient(60deg, #000000, #136BAA);
    background-clip: text;
    color: transparent;
    font-weight: bold;

}

.control-in-left>h2 {
    font-size: 2em;
    margin-bottom: 30px;
    background-image: linear-gradient(60deg, #000000, #136BAA);
    background-clip: text;
    color: transparent;
    font-weight: bold;
}


.right-banner-course {
    width: 600px;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.devlopment-svg {
    width: 550px;
    height: 500px;
    display: flex;
    justify-content: center;
}

.devlopment-svg>img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 
    topic content
*/

.sidebar_manu {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
}

.sidebar_manu>a {
    text-decoration: none;
    text-align: center;
    padding: 4px 10px;
    border-radius: 10px;
    border: 2px solid #136BAA;
    display: flex;
    align-items:center;
    gap: 10px;
}

.sidebar_manu>a > img{
    width: 50px;
    object-fit: cover;
}

.sidebar_manu>a > span{
    font-size:20px;
    font-weight: bold;
    color: #136BAA;
}



.topic-content {
    margin: auto;
    width: 500px;
    height: 65px;
    border-bottom: 3px solid #136BAA;
    border-top: 3px solid #136BAA;
    display: flex;
    align-items: center;
    margin-bottom: 50px;
    margin-top: 50px;
}

.pointer {
    width: 500px;
    height: 50px;
    position: relative;
    background-color: #136BAA;
    display: flex;
    align-items: center;
    padding: 0 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 100px auto;
}


.pointer:after {
    content: " ";
    position: absolute;
    left: -20px;
    bottom: 0;
    width: 0;
    height: 0;
    border-left: 20px solid #136BAA;
    border-top: 30px solid transparent;
    border-bottom: 20px solid transparent;
    transform: rotate(180deg);

}

.pointer:before {
    content: "";
    position: absolute;
    right: -20px;
    bottom: 0;
    width: 0;
    height: 0;
    border-left: 20px solid #136BAA;
    border-top: 30px solid transparent;
    border-bottom: 20px solid transparent;
}

.pointer>h2 {
    color: #fff;
    text-shadow: 0px 1px #363636;
}

.course-category {
    width: 550px;
    height: 500px;
    margin-bottom: 50px;
}

.text-course {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: #fff;
    width: 550px;
    padding: 5px 20px;
    border-radius: 20px;
    box-shadow: rgba(60, 64, 67, 0.3) 0px 1px 2px 0px, rgba(60, 64, 67, 0.15) 0px 1px 3px 1px;
    margin-bottom: 50px;

}

.text-course-img {
    width: 100px;
}

.text-course-img img {
    width: 100%;
}

.text-course>h1 {
    color:#136BAA;
    font-size: 2em;
}

/* course block */

.course-block {
    width: 100%;
    height: 350px;
    /* border: 2px solid #136BAA; */
    box-shadow: rgba(60, 64, 67, 0.3) 0px 1px 2px 0px, rgba(60, 64, 67, 0.15) 0px 1px 3px 1px;
    margin-bottom: 30px;
    border-radius: 20px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 50px;
    transition: 0.5s;
}

.course-block:hover {
    box-shadow: 0 0 0 2px #136BAA;
}

.image-course {
    width: 450px;
    height: 100%;
    border-radius: 20px;
    overflow: hidden;
}

.image-course>img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-course {
    width: 700px;
}

.about-course hr {
    background-color: #136BAA;
    height: 3px;
    width: 100%;
}

.about-course>p {
    text-align:center;
    background-color: #136BAA;
    color: #fff;
    width: 240px;
    padding: 2px 20px;
    border-radius: 10px;
    text-transform: uppercase;
    margin-bottom: 5px;
}

.about-course>h1 {
    font-size: 2em;
    color: #363636;
}

.student {
    display: flex;
    gap: 25px;

}

.student>span {
    color: #575656;
    font-weight: bold;
}

.pricing {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.price {
    display: flex;
    gap: 20px;
    align-items: center;
}

.price-course {
    color: #ff4500 !important;
    font-size: 23px;
}

.price .default-price {
    font-weight: bold;
    font-size: 23px;
}

.price .after {
    font-weight: bold;
    font-size: 35px;
    color: #136BAA;
}

.price .discount {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    border-radius: 50%;
    font-weight: bold;
    color: #ff4500;
}

.button-study {
    width: 170px;
    border-bottom: 2px solid #136BAA;
    border-right: 2px solid #136BAA;
    border-top: 2px solid #136BAA;
    border-radius: 0 20px 20px 0;
    display: flex;
    position: relative;
    gap: 30px;
}


.button-study>a {
    font-size: 23px;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 20px;
    color: #136BAA;
}

.start {
    margin-left: 20px;
}

.button-study>a .fa-circle-play {
    font-size: 2.1em;
    margin-left: -20px;
    position: absolute;
}

.tech-by {
    display: flex;
    justify-content: space-between;
    height: 65px;
    align-items: center;
    width: 100%;
    margin-top: 30px;
}

.profile-image {
    display: flex;
    gap: 10px;
    align-items: center;
}

.profile-image > p{
    color: #363636;
}

.image-teacher {
    width: 65px;
    height: 65px;
    border-radius: 50%;
    overflow: hidden;
    border: 1px solid #ff4500;
    box-shadow: rgba(60, 64, 67, 0.3) 0px 1px 2px 0px, rgba(60, 64, 67, 0.15) 0px 1px 3px 1px;
}

.image-teacher>img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-image>p {
    font-weight: bold;
}

.star-rate {
    color: #ffa500;
}

/* static course */

.dynamic-course {
    width: 100%;
    display: flex;
    margin-bottom: 50px;
    justify-content: space-between;
}

.course-card {
    width: 370px;
    /* height: 600px; */
    border-radius: 5px;
    box-shadow: rgba(60, 64, 67, 0.3) 0px 1px 2px 0px, rgba(60, 64, 67, 0.15) 0px 1px 3px 1px;
    overflow: hidden;
}

.image-card-course {
    width: 100%;
    height: 250px;
}

.image-card-course>img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-course-dynamic {
    padding: 10px 20px !important;
}

.about-course-dynamic .course-text {
    margin-bottom: 5px;
    font-size: 1.3em;
    color: #363636;
}

.dynamic-student {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

.dynamic-student>span {
    color: #575656;
}

.payment-price {
    display: flex;
    justify-content: space-between;
    margin-top: 15px;
}

.payment-price>a {
    text-decoration: none;
    font-size: 17px;
    font-weight: bold;
    color: #136BAA;
}

.payment-price .payment {
    border: 1px solid #136BAA;
    padding: 0 10px;
    border-radius: 5px;
    display: flex;
    align-items: center;
    gap: 5px;
}

/* under-img */

.under-img {
    padding: 10px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* btn-course */

.btn-course-pay {
    display: flex;
    gap: 50px;
}

.btn-icon {
    display: flex;
    align-items: center;
    gap: 20px;
}

.btn-icon>a {
    text-decoration: none;
    border: 2px solid #1372AA;
    padding: 8px 10px;
    color: #1372AA;
    border-radius: 5px;
}

.btn-icon>a:hover i {
    transform: scale(1.07);
    color: #00938d;
}

.btn-payment {
    padding: 7px 20px;
    background-color: #1372AA;
    color: #fff;
    border-radius: 8px;
    z-index: 10;
}

.btn-payment:hover {
    transform: scale(1.01);
    background-color: #00938d;
}

.btn-card-course {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 25px;
    margin-bottom: 20px;
}

.detail-read {
    padding: 3px 10px;
    background-color: #136BAA;
    color: #fff;
    border-radius: 5px;
}