main.css

*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

body{
    font-family: 'Montserrat', sans-serif;
    font-size: 16px;
}

.container{
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.page {
    overflow: hidden;
}


/* Header */
.header{
    width: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 100;
}

.header-inner{
    height: 110px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-link{
    text-decoration: none;
    color: #000;
    margin-right: 40px;
    font-size: 14px;
    text-transform: uppercase;
    margin-bottom: 9px;
    position: relative;
}


.nav-link:after{
    content: "";
    display: block;
    width: 0;
    height: 2px;
    position: absolute;
    left: 0;
    right: 0;
    margin: -10px auto;
    background-color: #D59C0C;
    transition: width .3s ease-in-out;
}

.nav-link:hover:after{
    width: 100%;
}

.mr40 {
    margin-right: 40px;
}

.ml40 {
    margin-left: 40px;
}

.mr0{
    margin-right: 0;
}

.img_logo{
    width: 130px;
    height: 130px;
}

.img-link{
    width: 150px;
    height: 150px;
}

.nav-toggle {
    display: none;
}


/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    background-color: rgba(255,255,255, .4);
}

.modal-content {
    width: 600px;
    background-color: #fff;
    height: 400px;
    margin: 100px auto 0;
    border-radius: 10px;
    padding: 20px;
    transform: translateY(-500px);
    box-shadow:  0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22);
}

.modal-content.openm {
    transform: translateY(0);
    transition: transform .3s linear;
}

.modal-content.close {
    transform: translateY(-500px);
    transition: transform .3s linear;
}

.modal-title {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 19px;
}

.form input, textarea {
    width: 400px;
    display: block;
    height: 35px;
    margin: 20px auto;
    padding: 10px;
    border: none;
    outline: none;
    border-bottom: 1px solid #ccc;

}

.form input {
    border: none;
    outline: none;
    border-bottom: 1px solid #ccc;
}

.date{
    height: 30px!important;
    width: 150px!important;
}

.message{
    height: 80px!important;
}

.modal-btn {
    display: block;
    margin: 0 auto;
    font-size: 17px;
    padding: 10px;
    border: none;
    background: #ccc;
    border-radius: 10px;
    outline: none;
    cursor: pointer;
}

.modal-btn:hover {
    background-color: #000;
    color: #fff;
    transition: color .3s linear,
    background-color .3s linear;
}

    /* Intro */
.intro{
    width: 100%;
    height: 100vh;
    min-height: 100vh;
    background: url("assets/intro.jpg") center no-repeat;
    background-size: cover;
}

.intro-content{
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    flex-direction: column;
}

.intro-text{
    font-size: 50px;
    width: 780px;
    text-align: center;
    color: #ccc;
    text-transform: uppercase;
}

.intro-gradient{
    width: 100%;
    height: 100vh;
    background: linear-gradient(rgba(134, 134, 134, 0.8),rgba(14, 14, 14, 0.8));
}

.btn{
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 80px;
    width: 195px;
    height: 50px;
    font-size: 18px;
    text-transform: uppercase;
    background-color: #6b6a6a;
    border-radius: 20px;
    text-decoration: none;
    color: #fff;
    transition: .2s linear;
}


.btn:hover{
    transform: scale(1.1);
}

/* section */

.section-about{
    background-color: #E6E6E6;
    display: flex;
    justify-content: center;
}

.section-service{
    background-color: #30343C;
}

.section-gallery{
    background-color: #E6E6E6;
}

.section-contact{
    background-color: #454545;
}

/* about */

.center {
    padding-top: 20px;
}

.rectangle {
    height: 100px;
    width: 3px;
    display: block;
    margin: 0 auto;
}

.toppng{
    height: 50px;
    display: block;
    margin: 20px auto 0;
}

.about-intro {
    width: 700px;
    display: block;
    margin: 40px auto 0;
    transition: .3s linear;
}

.about-intro video {
    width: 700px;
    height: 600px;
    outline: none;
}

.about-text{
    width: 900px;
    margin: 0 auto;
    text-align: center;
    padding-bottom: 100px;
}

.about-text h1{
    margin: 60px 0 50px 0;
    font-size: 25px;
    font-weight: 600;
    text-transform: uppercase;
}

.about-text p{
    margin: 0 auto 10px;
    font-size: 18px;
    color: #454545;
}


/* service */
.service-text{
    text-align: center;
    margin: 0 auto;
    color: #fff;
}

.service-text h1{
    font-size: 25px;
    text-transform: uppercase;
    font-weight: 500;
    margin: 50px 0 30px 0;
}

.ps2{
    width: 82%;
    margin: 7px auto;
}

.ps3{
    margin-top: 20px;
}

.service{
    width: 100%;
    display: flex;
    flex-direction: column;
    color: #fff;
}

.service-card{
    display: flex;
    justify-content: space-between;
    margin-top: 160px;
}

.wrap:nth-child(2){
    margin-bottom: 100px;
}

.service-item{
    width: 25%;
    height: 180px;
    text-align: center;
    position: relative;
    cursor: pointer;
    transition: all .3s linear;
}

.service-item-img{
    width: 64px;
    height: 64px;
}

.service-item-title{
    width: 50%;
    margin: 10px auto;
}

.service-item-btn{
    font-size: 14px;
    font-weight: 500;
    color: #D59C0C;
    text-transform: uppercase;
    text-decoration: none;
    position: absolute;
    bottom: -13px;
    right: 0;
    left: 0;
    opacity: 0;
    transition: opacity .2s linear;
}

.service-item:hover .service-item-btn{
    opacity: 1;
}


/* gallery */

.gallery-title{
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 100px;
    font-size: 30px;
    font-weight: 600;
    text-transform: uppercase;
}

.gallery-img{
    margin: 0 auto;
}

.gallery{
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gallery-item {
    margin: 40px 0;
}

.gallery-item:nth-child(1) {
    margin-top: 50px;
}

.gallery-item:nth-child(2) {
    padding-bottom: 30px;
}

.gallery-item img{
    width: 300px;
    height: 300px;
    margin: 0 13px;
    border-radius: 20px;
    transition: .2s linear;
}

.gallery-item img:hover{
    transform: scale(1.1);
}


/* contacts */
.contact-title{
    font-size: 30px;
    text-transform: uppercase;
    color: #fff;
    text-align: center;
    margin: 50px 0;
}

.form-contact{
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding-left: 10px;
}

.contacts{
    width: 30%;
    color: #fff;
    margin-top: 40px;
}

.map{
    width: 67%;
    padding-bottom: 100px;
}

.address,
.phone,
.network{
    margin-bottom: 30px;
}

.network {
    width: 115px;
}

.p_address{
    color: #D59C0C;
    margin: 5px 0;
}

.p-phone,
.p-network{
    color: #D59C0C;
    margin-top: 10px;
}

.fab{
    padding-right: 5px;
    font-size: 20px;
}

.network_link{
    text-decoration: none;
}

.map-iframe{
    width: 800px;
    height: 450px;
    padding-right: 10px;
}


/* footer */

.footer{
    width: 100%;
    min-height: 100vh;
    background: url("assets/footer.jpg") center no-repeat;
    background-size: cover;
    position: relative;
}

.footer-gradient{
    width: 100%;
    height: 100vh;
    background: linear-gradient(0.59turn, rgba(10,10,10,0.5), rgba(255,245,234, 0.5));
}

.footer-content{
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    flex-direction: column;
}

.footer-text{
    font-size: 50px;
    width: 780px;
    text-align: center;
    color: #fff;
    text-transform: uppercase;
}

.footer-link{
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 50px;
    width: 195px;
    height: 50px;
    font-size: 18px;
    text-transform: uppercase;
    background-color: #454545;
    border-radius: 20px;
    text-decoration: none;
    color: #fff;
    animation: animate 1.5s ease-in-out infinite;
}
.author{
    position: absolute;
    bottom: 20px;
    color: #000;
}

@keyframes animate {
    0%{
        transform: scale(1);
    }
    50%{
        transform: scale(1.1);
        background-color: black;
    }
    100%{
        transform: scale(1);
        background-color: #454545;
    }
}



/* Media */
@media (max-width: 1200px){
    /* contact */
    .map-iframe {
        width: 700px;
    }
}

@media (max-width: 990px){

    /* intro */
    .intro-text {
        font-size: 45px;
        width: 600px;
    }

    .nav-link {
        margin-right: 30px;
    }

    .mr40 {
        margin-right: 30px;
    }

    .mr0 {
        margin-right: 0;
    }

    .ml40{
        margin-left: 30px;
    }


    /* about */
    .about-intro{
        transition: .3s linear;
        width: 500px;
    }

    .about-intro video {
        width: 500px;
        height: 300px;
    }

    .about-text {
        width: 700px;
    }


    /* service */
    .service-card {
        display: flex;
        flex-wrap: wrap;
        margin-top: 0;
    }

    .service-item {
        margin-top: 80px;
        width: 50%;
        transition: .3s linear;
    }

    .service-item-btn{
        opacity: 1;
    }


    /* contact */

    .form-contact {
        display: block;
        padding-left: 0;
    }

    .contacts {
        width: 100%;
        text-align: center;
    }

    .map {
        width: 100%;
        display: flex;
        justify-content: center;
        margin-top: 50px;
    }

    .map-iframe {
        padding-right: 0;
        width: 700px;
    }

    .network {
        margin: 0 auto;
    }


    /* gallery */
    .gallery-item{
        display: flex;
        flex-direction: column;
        margin: 0;
    }

    .gallery-item img{
        margin-bottom: 40px;
        width: 400px;
        height: 400px;
    }

}

@media (max-width: 770px){

    /* modal */

    .modal-content{
        width: 400px;
        margin: 70px auto 0;
    }

    .form input, textarea {
        width: 300px;
    }

    /* intro */
    .intro-text {
        font-size: 35px;
        width: 500px;
    }

    /* Nav */

    .nav {
        display: none;
    }

    .nav.open {
        display: block;
        width: 100%;
    }

    .nav-line{
        content: "";
        position: absolute;
        top: 29px;
        right: 20px;
        width: 20px;
        height: 1px;
        background-color: #000;
        transition: all .3s linear;
    }

    .nav-line:before {
        content: "";
        position: absolute;
        top: -6px;
        width: 20px;
        height: 2px;
        background-color: #000;
    }

    .nav-line:after {
        content: "";
        position: absolute;
        top: 5px;
        width: 20px;
        height: 2px;
        background-color: #000;
    }

    .nav-toggle {
        display: block;
        font-size: 25px;
    }

    .header-inner{
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        padding: 0 20px;
        height: 60px;
        background-color: rgb(139,139,139);
        border-radius: 5px;
    }

    .header-inner.opened {
        height: 260px;
    }

    .header-inner.opened .nav {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        margin-top: 5px;
    }

    .header-inner.opened .nav-link {
        margin-bottom: 20px;
        margin-right: 0;
        padding-left: 25px;
    }

    .header-inner.opened .nav-link:after {
        margin: 2px 0;
    }

    .header-inner.opened .nav-line:before {
        transform: rotate(45deg);
        transition: transform .3s linear;
        top: 0;
        right: 1px;
    }

    .header-inner.opened .nav-line:after {
        transform: rotate(-45deg);
        transition: transform .3s linear;
        right: 2px;
        top: 0;
    }

    .header-inner.opened .nav-line {
        width: 0;
        transition: width .1s linear;
    }

    .header-inner.opened .img_logo {
        position: absolute;
        top: -22px;
    }

    .btn {
        margin-top: 50px;
        font-size: 16px;
        height: 45px;
        width: 160px;
    }

    .img_logo {
        width: 100px;
        height: 100px;
    }

    /* about */
    .about-text {
        width: 500px;
    }


    /* gallery */

    .gallery-item img{
        width: 300px;
        height: 300px;
    }


    /* contact */
    .map-iframe {
        width: 550px;
    }


    /* footer */

    .footer-text {
        width: 580px;
        font-size: 40px;
    }
}

@media (max-width: 575px){

    /* Modal */

    .modal-content {
        width: 300px;
        margin: 50px auto 0;
    }

    .form input, textarea {
        width: 200px;
    }

    .modal-btn {
        padding: 12px;
        font-size: 16px;
    }

    /* intro */
    .intro-text {
        font-size: 24px;
        width: 300px;
    }

    .btn {
        margin-top: 30px;
        font-size: 14px;
        width: 140px;
    }

    .header-inner{
        padding: 0 10px;
    }

    .nav-toggle {
        padding-right: 10px;
    }

    .header-inner.opened .nav {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
    }

    .header-inner.opened .nav-link {
        padding-left: 18px;
    }


    /* about */
    .about-text {
        width: 310px;
        padding-bottom: 70px;
    }

    .about-intro{
        width: 300px;
    }

    .about-intro video {
        width: 300px;
        height: 200px;
    }

    .rectangle{
        width: 3px;
        height: 70px;
    }

    .toppng {
        height: 45px;
    }

    .about-text h1{
        font-size: 22px;
        margin: 40px 0 50px 0;
    }



    /* service */
    .service-item {
        width: 100%;
    }



    /* gallery */

    .gallery-item img{
        width: 200px;
        height: 200px;
    }

    .gallery-title{
        font-size: 25px;
    }


    /* contact */
    .map-iframe {
        width: 310px;
        height: 250px;
    }

    .contact-title {
        font-size: 25px;
    }


    /* footer */

    .footer-text {
        width: 300px;
        font-size: 30px;
    }

    .footer-link {
        width: 160px;
        font-size: 15px;
    }
}