:root {
    --gradient: linear-gradient(90deg, #f1c40f, #f39c12);
}

* {
    font-family: 'Open Sans', sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    border: none;
    outline: none;
    text-decoration: none;
    text-transform: capitalize;
    transition: all .2s linear;
}

*::selection {
    background: #f39c12;
    color: #fff;
}

html {
    font-size: 62.5%;
    overflow-x: hidden;
}

html::-webkit-scrollbar {
    width: 1.5rem;
}

html::-webkit-scrollbar-track {
    background: #333;
}

html::-webkit-scrollbar-thumb {
    background: linear-gradient(#f1c40f, #f39c12);
}

section {
    min-height: 100vh;
    padding: 1rem 7%;
    padding-top: 6rem;
}

.btn {
    padding: .7rem 3rem;
    font-size: 2rem;
    color: #fff;
    background: var(--gradient);
    border-radius: 5rem;
    margin-top: 1rem;
    cursor: pointer;
    box-shadow: 0 .1rem .3rem rgba(0, 0, 0, .3);
    position: relative;
    overflow: hidden;
    z-index: 0;
}

.btn::before {
    content: '';
    position: absolute;
    top: -1rem;
    left: -100%;
    background: #fff9;
    height: 150%;
    width: 20%;
    transform: rotate(25deg);
    z-index: -1;
}

.btn:hover::before {
    transition: .3s linear;
    left: 120%;
}

.heading {
    color: #444;
    padding: 1rem;
    font-size: 4rem;
    text-align: center;
}

header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    padding: 1.5rem 7%;
    background: var(--gradient);
    box-shadow: 0 .1rem .3rem rgba(0, 0, 0, .3);
}

header .logo {
    color: #fff;
    font-size: 2.5rem;
}

header .navbar ul {
    display: flex;
    align-items: center;
    justify-content: center;
    list-style: none;
}

header .navbar ul li {
    margin: 0 1rem;
}

header .navbar ul li a {
    font-size: 2rem;
    color: #fff;
}

header .navbar ul li a.active,
header .navbar ul li a:hover {
    color: #444;
}

header #login {
    font-size: 3rem;
    color: #fff;
    cursor: pointer;
}

header #login:hover {
    color: #444;
}

header #menu {
    font-size: 3rem;
    color: #fff;
    cursor: pointer;
    display: none;
}

.login-form {
    height: 100%;
    width: 100%;
    position: fixed;
    top: -120%;
    left: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, .5);
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-form.popup {
    top: 0;
}

.login-form form {
    width: 35rem;
    background: #fff;
    margin: 0 2rem;
    padding: 1rem 3rem;
    border-radius: .5rem;
    box-shadow: 0 .1rem .3rem #333;
    position: relative;
}

.login-form form h3 {
    font-size: 3rem;
    color: #f39c12;
    padding: 1rem 0;
}

.login-form form .box {
    width: 100%;
    padding: 1rem 0;
    margin: 1rem 0;
    border-bottom: .2rem solid #666;
    font-size: 1.6rem;
    color: #333;
    text-transform: none;
}

.login-form form .box::placeholder {
    text-transform: capitalize;
}

.login-form form .box:focus {
    border-color: #f39c12;
}

.login-form form .box:nth-child(3) {
    margin-bottom: 5rem;
}

.login-form form p {
    font-size: 1.4rem;
    color: #666;
    padding: .5rem 0;
}

.login-form form p a {
    color: #f39c12;
}

.login-form form .btn {
    width: 100%;
    margin: 2rem 0;
}

.login-form form .btn:hover {
    background: #444;
}

.login-form form .fa-times {
    position: absolute;
    top: 1.5rem;
    right: 2rem;
    font-size: 2.5rem;
    cursor: pointer;
    color: #999;
}

.login-form form .fa-times:hover {
    color: #444;
}

.home {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-flow: column;
    background: url("images/home-bg.jpg") no-repeat;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
    text-align: center;
}

.home h1 {
    font-size: 6rem;
    color: #666;
}

.home p {
    font-size: 1.9rem;
    color: #999;
    padding: 1rem 0;
    width: 70rem;
}

.home .shape {
    position: absolute;
    bottom: -.2rem;
    left: 0;
    height: 15rem;
    width: 100%;
    background: url("images/shape.png");
    block-size: 100rem 15rem;
    filter: drop-shadow(0 -.1rem .1rem rgba(0, 0, 0, .2));
    animation: animate 10s linear infinite;
}

@keyframes animate {
    0% {
        background-position-x: 0rem;
    }
    100% {
        background-position-x: 100rem;
    }
}

.about {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

.about .image {
    flex: 1 1 40rem;
}

.about .image img {
    height: 65vh;
    width: 100%;
}

.about .content {
    flex: 1 1 40rem;
}

.about .content h3 {
    font-size: 3.5rem;
    color: #666;
}

.about .content p {
    font-size: 1.5rem;
    color: #666;
    padding: 1rem 0;
}

.course .box-container {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

.course .box-container .box {
    width: 35rem;
    border: .1rem solid rgba(0, 0, 0, .3);
    position: relative;
    margin: 1.5rem;
}

.course .box-container .box img {
    height: 20rem;
    width: 100%;
    object-fit: cover;
}

.course .box-container .box .content {
    padding: 1rem;
}

.course .box-container .box .content .stars i {
    color: #f39c12;
    font-size: 1.7rem;
    padding: 1rem .1rem;
}

.course .box-container .box .content .title {
    color: #444;
    font-size: 2.1rem;
}

.course .box-container .box .content .title:hover {
    text-decoration: underline;
}

.course .box-container .box .content p {
    padding: 1rem 0;
    color: #666;
    font-size: 1.5rem;
}

.course .box-container .box .content .info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: .5rem;
    border-top: .1rem solid rgba(0, 0, 0, .3);
}

.course .box-container .box .content .info h3 {
    font-size: 1.5rem;
    padding: 1rem;
    color: #666;
}

.course .box-container .box .content .info h3 i {
    color: #f39c12;
}

.course .box-container .box .price {
    position: absolute;
    top: 16rem;
    right: 1rem;
    height: 8rem;
    width: 8rem;
    line-height: 8rem;
    text-align: center;
    border-radius: 50%;
    background: var(--gradient);
    color: #fff;
    font-size: 3rem;
}

.teacher {
    text-align: center;
    background: url("images/teachers.jfif") no-repeat;
    background-size: cover;
    background-position: bottom;
}

.teacher p {
    font-size: 1.8rem;
    color: #666;
    width: 65rem;
    margin: 1rem auto;
}

.contact {
    background: #111;
}

.contact .heading {
    color: #fff;
}

.contact .row {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    flex-wrap: wrap;
}

.contact .row form {
    flex: 1 1 50rem;
    background: #222;
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-top: 3rem;
    align-items: flex-start;
}

.contact .row form .box {
    height: 5rem;
    width: 49%;
    border: .1rem solid #eee;
    padding: 0 1rem;
    margin: 1rem 0;
    font-size: 1.7rem;
    color: #fff;
    background: none;
    text-transform: none;
}

.contact .row form .box:focus {
    border-color: #f39c12;
}

.contact .row form .box::placeholder {
    text-transform: capitalize;
}

.contact .row form .address {
    height: 15rem;
    padding: 1rem;
    resize: none;
    width: 100%;
}

.contact .row form .btn:hover {
    background: #fff;
    color: #333;
}

.contact .row .image img {
    height: 80vh;
    margin-top: 2rem;
}

.footer {
    background: #333;
}

.footer .box-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.footer .box-container .box {
    margin: 1.5rem;
    text-align: center;
    flex: 1 1 25rem;
}

.footer .box-container .box h3 {
    font-size: 2.5rem;
    color: #fff;
    padding: 1rem 0;
}

.footer .box-container .box p {
    font-size: 1.7rem;
    color: #eee;
    padding: .7rem 0;
}

.footer .box-container .box p i {
    padding-right: .5rem;
    color: #f39c12;
}

.footer .box-container .box a {
    font-size: 1.8rem;
    display: block;
    padding: .5rem 0;
    color: #eee;
}

.footer .box-container .box a:hover {
    text-decoration: underline;
}

.footer .credit {
    padding: 2rem 1rem;
    font-size: 2rem;
    color: #fff;
    background: #111;
    text-align: center;
    font-weight: normal;
    padding-bottom: 2rem;
}

.footer .credit a {
    color: #f39c12
}


/* media queries  */

@media (max-width:768px) {
    html {
        font-size: 55%;
    }
    header #menu {
        display: block;
    }
    header .navbar {
        position: fixed;
        top: -120%;
        left: 0;
        width: 100%;
        background: #444;
    }
    header .navbar ul {
        flex-flow: column;
        padding: 2rem 0;
    }
    header .navbar ul li {
        margin: 1.5rem 0;
        text-align: center;
        width: 100%;
    }
    header .navbar ul li a {
        font-size: 2.5rem;
        display: block;
    }
    header .navbar ul li a.active,
    header .navbar ul li a:hover {
        color: #f39c12;
    }
    .fa-times {
        transform: rotate(180deg);
    }
    header .navbar.nav-toggle {
        top: 6.4rem;
    }
    .home h1 {
        font-size: 4rem;
    }
    .home p {
        width: auto;
    }
    .teacher p {
        width: auto;
    }
    .contact .row .image {
        display: none;
    }
}

@media (max-width:500px) {
    html {
        font-size: 50%;
    }
    .contact .row form .box {
        width: 100%;
    }
}