body {
    margin: 0;

    font-size: 15px;
    line-height: 1.6;
    color: #333;
}

*,
*:before,
*:after {
    box-sizing: border-box;
}

h1, h2, h3, h4, h5, h6 {
    margin: 0;
}

/* Container */
.container {
    width: 100%;
    max-width: 2880px;
    padding: 0 15px;
    margin: 0 auto;
}

/* Header */
.header {
    width: 100%;
    padding-top: 30px;

    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header.fixed {
    padding: 10px 0;

    background-color: #88A;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);

    position: fixed;
    top: 0;
    left: 0;
    right: 0;

    transform: translate3d(0, 0, 0);
}


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

.header_logo {
    font-size: 25px;
    font-weight: 700;
    color: #fff;

    text-transform: uppercase;
}

.header_navigation {
    font-size: 20px;
    text-transform: uppercase;
}

.nav_text {
    display: inline-block;
    vertical-align: top;
    margin: 0 15px;
    position: relative;

    color: #FFF;
    text-decoration: none;

    transition: color .2s linear;
}

.nav_text:after {
    content: "";
    display: block;
    width: 100%;
    height: 5px;

    background-color: #CFC;
    opacity: 0;

    position: absolute;
    top: 100%;
    left: 0;
    z-index: 1;

    transition: opacity .2s linear;
}

.nav_text:hover {
    color: #CFC;
}

.nav_text:hover:after,
.nav_text.active:after {
    opacity: 1;
}

.nav_text.active {
    color: #CFC;
}

/* Nav toggle */
.nav-toggle {
    width: 30px;
    padding: 10px 0;
    display: none;

    font-size: 0;
    color: transparent;

    border: 0;
    background: none;
    cursor: pointer;

    position: absolute;
    top: 24px;
    right: 24px;
    z-index: 1;
}

.nav-toggle:focus {
    outline: 0;
}

.nav-toggle_item {
    display: block;
    width: 100%;
    height: 3px;

    background-color: #fff;

    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    margin: auto;

    transition: background .2s linear;
}

.nav-toggle.active .nav-toggle_item {
    background: none;
}

.nav-toggle_item:before,
.nav-toggle_item:after {
    content: "";
    width: 100%;
    height: 3px;

    background-color: #fff;

    position: absolute;
    left: 0;
    z-index: 1;

    transition: transform .2s linear;
}

.nav-toggle_item:before {
    top: -8px;
}

.nav-toggle_item:after {
    bottom: -8px;
}

.nav-toggle.active .nav-toggle_item:before {
    transform-origin: left top;
    transform: rotate(45deg) translate3d(0px, -2px, 0)
}

.nav-toggle.active .nav-toggle_item:after {
    transform-origin: left bottom;
    transform: rotate(-45deg) translate3d(0px, 3px, 0);
}


/* Intro */
.intro {
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 100%;
    height: 100vh;
    min-height: 820px;
    position: relative;

    background: url("../images/intro.png") center no-repeat;
    -webkit-background-size: cover;
    background-size: cover;
}

.intro_inside {
    width: 100%;
    max-width: 880px;
    margin: 0 auto;

    text-align: center;
}

.intro_subtitle {
    color: #fff;
    line-height: 1;
    text-align: center;
}

.intro_title {
    color: #fff;
    font-size: 200px;
    font-weight: 700;
    text-transform: uppercase;
    line-height: 1;
}

.intro_btn_container {
    margin-top: 60px;
}

/* Section */
.section {
    padding: 30px 0;
}

.section_header {
    width: 100%;
    max-width: 950px;
    margin: 0 auto 30px;

    text-align: center;

    padding: 40px 0;
}

.section_title {
    font-size: 30px;
    font-weight: 700;
    color: #333;
    text-transform: uppercase;
}

.section_title:after {
    content: "";
    display: block;
    width: 80px;
    height: 5px;
    margin: 30px auto;

    background-color: #567;
}

.section_text {
    font-size: 20px;
    color: #666;
}

/* Picture */
.picture_container {
    margin: 80px -15px 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.picture {
    width: 33.33333%;
    padding: 0 15px;
}

.picture_base {
    position: relative;
    background-color: #88A;
}

.picture_base:hover .picture_img {
    transform: translate3d(-7px, -7px, 0);
}

.picture_base:hover .picture_img img {
    opacity: .1;
}

.picture_img:hover .picture_text {
    opacity: 1;
}

.picture_img {
    background: linear-gradient(to bottom, #123, #567);

    transition: transform .2s linear;
}

.picture_img img {
    display: block;
    max-width: 100%;
    height: auto;
    transition: opacity .1s linear;
}

.picture_text {
    width: 100%;

    font-size: 20px;
    color: #fff;
    font-weight: 600;
    text-align: center;
    opacity: 0;

    position: absolute;
    top: 50%;
    left: 0;
    z-index: 2;
    transform: translate3d(0, -50%, 0);

    transition: opacity .2s linear;
}

/* footer */

.footer {
    padding-top: 65px;
}

.footer_inside {
    padding: 20px 0;

    border-top: 1px solid #778;

    font-size: 14px;
    color: #334;
    text-align: center;
}

iframe {
    width: 80%;

    justify-content: center;
}

/* Button */
.button {
    display: inline-block;
    vertical-align: top;
    padding: 12px 60px;

    border: 3px solid #FFF;

    font-size: 22px;
    font-weight: 700;
    color: #FFF;
    text-transform: uppercase;
    text-decoration: none;

    transition: background .2s linear, color .2s linear;
}

.button:hover {
    background-color: #FFF;
    color: #333;
}

@media (max-width: 980px) {

    .header_navigation {
        font-size: 15px;
    }
}

@media (max-width: 770px) {

    .intro {
        min-height: 650px;
        margin-top: 60px;
    }

    .intro_title {
        font-size: 120px;
    }


    .header {
        padding: 10px 0;
        background-color: #88A;
    }


    /* Nav */
    .header_navigation {
        display: none;
        width: 100%;

        position: absolute;
        top: 100%;
        left: 0;

        font-size: 20px;
        background-color: #88A;
    }

    .header_navigation.active {
        display: block;
    }

    .nav_text {
        display: block;
        margin: 0;
        padding: 8px 20px;
    }

    .nav-toggle {
        display: block;
    }

    .section {
        padding: 40px 0;
    }

    .picture_container{
        margin: 10px 0px 0px;
        justify-content: center;
    }

    .picture {
        width: 100%;
        max-width: 380px;
        margin-bottom: 20px;
    }
}

@media (max-width: 480px) {

    .intro {
        min-height: 280px;
    }

    .intro_title {
        font-size: 80px;
    }
}