* {
            margin: 0;
            padding: 0;
            border: 0;
            outline: 0;
            text-decoration: none;
            list-style: none;
            box-sizing: border-box;
        }
        
         :root {
            --color-primary: #6c63ff;
            --color-success: #00bf8e;
            --color-warning: #f7c942;
            --color-danger: #f75842;
            --color-danger-variant: rgba(247, 88, 66, 0.4);
            --color-white: #fff;
            --color-black: #000;
            --color-bg: #1f2641;
            --color-bg1: #2e3267;
            --color-bg2: #424890;
            --container-width-lg: 80%;
            --container-width-md: 90%;
            --container-width-sm: 94%;
            --transition: all 400ms ease;
        }
        
        body {
            font-family: 'Montserrat', sans-serif;
            line-height: 1.7;
            color: var(--color-white);
            background: var(--color-bg);
        }
        
        .container {
            width: 76%;
            margin: 0 auto;
        }
        
        section {
            padding: 5rem 0;
        }
        
        section h2 {
            text-align: center;
            margin-bottom: 4rem;
        }
        
        h1,
        h2,
        h3,
        h4,
        h5 {
            line-height: 1.2;
        }
        
        h1 {
            font-size: 2.4rem;
        }
        
        h2 {
            font-size: 2rem;
        }
        
        h3 {
            font-size: 1.6rem;
        }
        
        h4 {
            font-size: 1.3rem;
        }
        
        a {
            color: var(--color-white);
        }
        
        img {
            width: 100%;
            display: block;
            object-fit: cover;
        }
        
        .btn {
            display: inline-block;
            background: var(--color-white);
            color: var(--color-black);
            padding: 1rem 2rem;
            border: 1px solid transparent;
            font-weight: 500;
            transition: var(--transition);
        }
        
        .btn:hover {
            background: transparent;
            color: var(--color-white);
            border-color: var(--color-white);
        }
        
        .btn-primary {
            background: var(--color-danger);
            color: var(--color-white);
            padding: 15px;
        }
        /* navbar */
        
        nav {
            background: transparent;
            width: 100vw;
            height: 5rem;
            position: fixed;
            top: 0;
            z-index: 11;
        }
        
        .window-scroll {
            background: linear-gradient(#48558d, #cce9ff);
            box-shadow: 0 1rem 2rem #003;
        }
        
        .nav_container {
            height: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        nav button {
            display: none;
        }
        
        .nav_menu {
            display: flex;
            align-items: center;
            gap: 4rem;
        }
        
        .nav_menu a {
            font-size: 0.9rem;
            transition: var(--transition);
        }
        
        .nav_menu a:hover {
            color: var(--color-bg2);
        }
        /* Header*/
        
        header {
            position: relative;
            top: 5rem;
            overflow: hidden;
            margin-bottom: 5rem;
            margin-top: 3rem;
        }
        
        .header_container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            align-items: center;
            gap: 1rem;
            height: 80vh;
        }
        
        .header_left h1 {
            padding-bottom: 2rem;
        }
        
        .header_left p {
            margin: 1rem 0 2rem;
        }
        
        .header_right {
            margin-right: 0;
        }
        
        .header-crs_right {
            margin-bottom: 2rem;
            margin-right: 0;
        }
        
        .header-crs_left {
            margin-top: 0;
            margin-left: 3rem;
        }
        
        .header-crs_left h1 {
            position: absolute;
            margin-right: 9rem;
            margin-top: -6rem;
        }
        
        .header-crs_left p {
            padding-bottom: 2rem;
            margin-top: 2rem;
        }
        
        .image-crs {
            position: absolute;
            top: 15rem;
        }
        
        .header-crs_container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            align-items: center;
            gap: 3rem;
            height: 100vh;
        }
        
        .header_right img {
            margin-right: 0;
            bottom: 0;
            float: right;
            width: 100%;
        }
        
        .header-crs_right img {
            right: 0;
            position: absolute;
            width: 40%;
        }
        /* categories */
        
        .categories {
            background: var(--color-bg1);
        }
        
        .categories h1 {
            line-height: 1;
            margin-bottom: 3rem;
        }
        
        .categories_container {
            display: grid;
            grid-template-columns: 40% 60%;
        }
        
        .categories_left {
            margin-right: 4rem;
        }
        
        .categories_left p {
            margin: 1rem 0 3rem;
        }
        
        .categories_right {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.2rem;
        }
        
        .category {
            background: var(--color-bg2);
            padding: 2rem;
            border-radius: 2rem;
            transition: var(--transition);
        }
        
        .category:hover {
            box-shadow: 0 3rem 3rem rgba(0, 0, 0, 0.3);
            z-index: 1;
        }
        
        .category_icon {
            background: var(--color-primary);
            padding: 0.7rem;
            border-radius: 0.9rem;
        }
        
        .category h5 {
            margin: 2rem 0 1rem;
        }
        
        .category p {
            font-size: 0.85rem;
        }
        /* Courses */
        
        .courses {
            margin-top: 8rem;
            margin-bottom: 8rem;
        }
        
        .courses_container {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        
        .course {
            background: var(--color-bg1);
            text-align: center;
            border: 1px solid transparent;
            transition: var();
        }
        
        .course:hover {
            background: transparent;
            border-color: var(--color-primary);
        }
        
        .course_info {
            padding: 2rem;
        }
        
        .course_info p {
            margin: 1.2rem 0 2rem;
            font-size: 0.9rem;
        }
        /* Faqs */
        
        .faqs {
            background: var(--color-bg1);
            box-shadow: inset 0 0 3rem rgba(0, 0, 0, 0.5);
        }
        
        .faqs_container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
        }
        
        .faq {
            padding: 2rem;
            display: flex;
            align-items: center;
            gap: 1.4rem;
            height: fit-content;
            background: var(--color-primary);
            cursor: pointer;
        }
        
        .faq h4 {
            font-size: 1rem;
            line-height: 2.2;
        }
        
        .faq_icon {
            align-self: flex-start;
            font-size: 1.2rem;
        }
        
        .faq p {
            margin-top: 0.8rem;
            display: none;
        }
        
        .faq.open p {
            display: block;
        }
        /*Testi*/
        
        .testimoni_container {
            overflow-x: hidden;
            position: relative;
            margin-bottom: 5rem;
        }
        
        .testimoni {
            padding-top: 2rem;
        }
        
        .person {
            width: 20%;
            height: 20%;
            border-radius: 50%;
            overflow: hidden;
            margin: 0 auto 1rem;
        }
        
        .testimoni_info {
            text-align: center;
        }
        
        .testimoni_body {
            background: var(--color-primary);
            padding: 1.5rem;
            margin-top: 3rem;
            position: relative;
        }
        
        .testimoni_body p {
            font-size: 12px;
        }
        
        .testimoni_body::before {
            content: '';
            display: block;
            background: linear-gradient(135deg, transparent, var(--color-primary), var(--color-primary), var(--color-primary));
            width: 3rem;
            height: 3rem;
            position: absolute;
            left: 50%;
            top: -1.5rem;
            transform: rotate(45deg);
        }
        /* Footer */
        
        footer {
            background: var(--color-bg1);
            box-shadow: inset 0 0 3rem rgba(0, 0, 0, 0.5);
            padding-top: 3rem;
            font-size: 0.9rem;
        }
        
        .footer_container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 5rem;
        }
        
        .footer_container>div h4 {
            margin-bottom: 1.2rem;
        }
        
        .footer_1 p {
            margin: 0 0 2rem;
        }
        
        .footer_4 p {
            font-size: 13px;
            margin: 0 0 1rem;
        }
        
        footer ul li {
            margin-bottom: 0.7rem;
        }
        
        footer ul li a {
            font-size: 12px;
        }
        
        footer ul li a:hover {
            text-decoration: underline;
        }
        
        .footer_socials {
            display: flex;
            gap: 1rem;
            font-size: 1.2rem;
            margin-top: 1rem;
        }
        
        .footer_copyright {
            text-align: center;
            margin-top: 1.5rem;
            padding: 1.2rem 0;
            border-top: 1px solid var(--color-bg2);
        }
        /* media queries */
        /* phone */
        /* 820px */
        
        @media only screen and (max-width: 820px) {
            .container {
                width: var(--container-width-md);
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            h4 {
                font-size: 1rem;
            }
            p {
                font-size: 18px;
            }
            /* Navbar */
            nav button {
                display: inline-block;
                background: transparent;
                font-size: 1.8rem;
                color: var(--color-white);
                cursor: pointer;
            }
            nav button#close-menu-btn {
                display: none;
            }
            .nav_menu {
                position: fixed;
                top: 5rem;
                right: 5%;
                height: 14rem;
                width: 14rem;
                flex-direction: column;
                gap: 0;
                display: none;
            }
            .nav_menu li {
                width: 100%;
                height: 5.8rem;
                animation: animateNavItems 400ms linear forwards;
                transform-origin: top right;
                opacity: 0;
            }
            .nav_menu li:nth-child(2) {
                animation-delay: 200ms;
            }
            .nav_menu li:nth-child(3) {
                animation-delay: 400ms;
            }
            .nav_menu li:nth-child(4) {
                animation-delay: 500ms;
            }
            .nav_menu li:nth-child(5) {
                animation-delay: 600ms;
            }
            @keyframes animateNavItems {
                0% {
                    transform: rotateZ(-90deg) rotateX(90deg) scale(0.1);
                }
                100% {
                    transform: rotateZ(0) rotateX(0) scale(1);
                    opacity: 1;
                }
            }
            .nav_menu li a {
                background: var(--color-primary);
                box-shadow: -4rem 6rem 10rem rgba(0, 0, 0, .6);
                width: 100%;
                height: 100%;
                display: grid;
                place-items: center;
            }
            .nav_menu li a:hover {
                background: var(--color-bg2);
                color: var(--color-white);
            }
            /* Header */
            .container-crs {
                width: 100%;
            }
            .header_container {
                gap: 0;
                display: grid;
                height: 45vh;
            }
            .header-crs_container {
                gap: 20rem;
                height: 68vh;
                display: grid;
                grid-template-columns: 1fr 1fr;
            }
            .header_right img {
                position: absolute;
                right: 0;
                bottom: 0;
                padding-bottom: 5rem;
                width: 70%;
                height: 70%;
            }
            .header-crs_right {
                right: 0;
                margin-top: 18rem;
                position: absolute;
                margin-bottom: 1rem;
                width: 50%;
                height: 50%;
            }
            .header-crs_right img {
                width: 70%;
                height: 70%;
                top: 3rem;
            }
            .btn-primary {
                width: 6rem;
                height: 3rem;
                font-size: 12px;
                text-align: center;
            }
            .header_left {
                position: absolute;
                top: 0;
                margin-right: 20rem;
            }
            .header-crs_left {
                margin-right: 0;
                position: absolute;
                top: 0;
            }
            .h1 {
                position: absolute;
                top: 0;
                padding-top: 6rem;
            }
            .header-crs_left p {
                padding-bottom: 6rem;
                margin-top: 15rem;
                padding-right: 11rem;
                padding-top: 1rem;
            }
            /*Categories */
            .categories {
                height: auto;
            }
            .categories_container {
                grid-template-columns: 1fr;
            }
            .categories_left {
                margin-right: 0;
                padding-bottom: 3rem;
            }
            .btn {
                width: 9rem;
                height: 3rem;
                font-size: 12px;
            }
            /* courses */
            .courses {
                margin-top: 0;
            }
            .courses_container {
                grid-template-columns: 1fr 1fr;
            }
            /* FAQ */
            .faqs_container {
                grid-template-columns: 1fr;
            }
            .faq {
                padding: 1.5rem;
            }
            /* footer */
            .footer_container {
                grid-template-columns: 1fr 1fr;
            }
            /* File Courses */
            .container-courses {
                padding-top: 0;
            }
            /* file contact */
            .contacts {
                padding-bottom: 0;
                display: grid;
            }
            .contact_container {
                grid-template-columns: 1fr;
                margin-top: 3rem;
                height: auto;
                padding: 1.5rem;
            }
            .contact_form {
                grid-template-columns: 1fr;
                align-self: center;
            }
        }
        /* 1024 px */
        
        @media screen and (max-width: 1024px) {
            .container {
                width: var(--container-width-md);
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            h4 {
                font-size: 1rem;
            }
            p {
                font-size: 14px;
            }
            .btn {
                width: 9rem;
                height: 3rem;
                font-size: 12px;
            }
            .btn-primary {
                width: 7rem;
                height: 3rem;
                font-size: 12px;
                text-align: center;
            }
            /* Navbar */
            nav button {
                display: inline-block;
                background: transparent;
                font-size: 1.8rem;
                color: var(--color-white);
                cursor: pointer;
            }
            nav button#close-menu-btn {
                display: none;
            }
            .nav_menu {
                position: fixed;
                top: 5rem;
                right: 5%;
                height: 14rem;
                width: 14rem;
                flex-direction: column;
                gap: 0;
                display: none;
            }
            .nav_menu li {
                width: 100%;
                height: 5.8rem;
                animation: animateNavItems 400ms linear forwards;
                transform-origin: top right;
                opacity: 0;
            }
            .nav_menu li:nth-child(2) {
                animation-delay: 200ms;
            }
            .nav_menu li:nth-child(3) {
                animation-delay: 400ms;
            }
            .nav_menu li:nth-child(4) {
                animation-delay: 500ms;
            }
            .nav_menu li:nth-child(5) {
                animation-delay: 600ms;
            }
            @keyframes animateNavItems {
                0% {
                    transform: rotateZ(-90deg) rotateX(90deg) scale(0.1);
                }
                100% {
                    transform: rotateZ(0) rotateX(0) scale(1);
                    opacity: 1;
                }
            }
            .nav_menu li a {
                background: var(--color-primary);
                box-shadow: -4rem 6rem 10rem rgba(0, 0, 0, .6);
                width: 100%;
                height: 100%;
                display: grid;
                place-items: center;
            }
            .nav_menu li a:hover {
                background: var(--color-bg2);
                color: var(--color-white);
            }
            .header_container {
                height: 68vh;
            }
            .header_right.image {
                width: 100%;
            }
            .header-crs_left h1 {
                top: 10rem;
            }
        }
        
        @media only screen and (max-width: 420px) {
            .container {
                width: var(--container-width-md);
            }
            h1 {
                font-size: 1.2rem;
            }
            h2 {
                font-size: 1rem;
            }
            h3 {
                font-size: 0.8rem;
            }
            h4 {
                font-size: 0.6rem;
            }
            p {
                font-size: 10px;
            }
            /* Navbar */
            nav {
                width: 100%;
            }
            nav button {
                display: inline-block;
                background: transparent;
                font-size: 1.5rem;
                color: var(--color-white);
                cursor: pointer;
            }
            nav button#close-menu-btn {
                display: none;
            }
            .nav_menu {
                position: fixed;
                top: 5rem;
                right: 5%;
                height: 15rem;
                width: 10rem;
                flex-direction: column;
                gap: 0;
                display: none;
            }
            .nav_menu li {
                width: 100%;
                height: 4.5rem;
                animation: animateNavItems 400ms linear forwards;
                transform-origin: top right;
                opacity: 0;
            }
            .nav_menu li:nth-child(2) {
                animation-delay: 200ms;
            }
            .nav_menu li:nth-child(3) {
                animation-delay: 400ms;
            }
            .nav_menu li:nth-child(4) {
                animation-delay: 500ms;
            }
            .nav_menu li:nth-child(5) {
                animation-delay: 600ms;
            }
            @keyframes animateNavItems {
                0% {
                    transform: rotateZ(-90deg) rotateX(90deg) scale(0.1);
                }
                100% {
                    transform: rotateZ(0) rotateX(0) scale(1);
                    opacity: 1;
                }
            }
            .nav_menu li a {
                background: var(--color-primary);
                box-shadow: -4rem 6rem 10rem rgba(0, 0, 0, .6);
                width: 100%;
                height: 100%;
                display: grid;
                place-items: center;
            }
            .nav_menu li a:hover {
                background: var(--color-bg2);
                color: var(--color-white);
            }
            /* Header */
            .header-crs_container {
                display: grid;
                gap: 0;
                margin-right: 2rem;
                grid-template-columns: 1fr 1fr;
                overflow: hidden;
                height: 78vh;
                max-width: 100%;
            }
            .header_container {
                gap: 0;
                display: block;
                grid-template-columns: 1fr;
                height: 58vh;
            }
            .header_right img {
                position: absolute;
                right: 0;
                bottom: 0;
                padding-bottom: 2rem;
                width: 15rem;
                height: 15rem;
            }
            .header-crs_right {
                position: absolute;
                top: 0;
                margin-right: 2rem;
                margin-left: 0;
                width: 30rem;
                height: 30rem;
            }
            .image-crs {
                display: block;
                position: relative;
                top: 2rem;
                width: 50%;
                height: 50%;
            }
            .btn {
                font-weight: 300;
                padding-top: 0.3rem;
                padding-bottom: 0.3rem;
            }
            .btn-primary {
                width: 6rem;
                height: 2rem;
                font-size: 9px;
                text-align: center;
            }
            .header_left {
                position: absolute;
                top: 0;
                margin-right: 5rem;
            }
            .header-crs_left {
                margin-right: 7rem;
                position: static;
                top: 0;
                width: 20rem;
                margin-bottom: 15rem;
            }
            .header-crs_left h1 {
                margin-right: 2rem;
                padding-right: 4rem;
                top: 1rem;
            }
            .header-crs_left p {
                padding-top: 5rem;
                padding-bottom: 4rem;
                padding-right: 0;
                margin-right: 2rem;
                margin-top: 0rem;
            }
            /*Categories */
            .categories {
                width: 100%;
                height: auto;
                display: grid;
            }
            .categories_container {
                grid-template-columns: 1fr;
            }
            .categories_left {
                margin-right: 5rem;
                padding-bottom: 3rem;
            }
            .btn {
                width: 5rem;
                height: 2rem;
                font-size: 0.6rem;
                padding-left: 4.8px;
                padding-right: 4.8px;
            }
            .categories_right {
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .category {
                padding: 1rem;
            }
            /* Our class */
            .course_info {
                padding: 1rem;
            }
            .course_info p {
                margin: .5rem 0 1rem;
                font-size: 0.6rem;
            }
            .body-courses {
                overflow-x: hidden;
            }
            .fe {
                display: block;
                max-width: 100%;
            }
        }