header {
    position: fixed;
    top: 0;
    width: 100%;
    height: 116px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #0f1429;
    z-index: 9999;
}

.header_logo {
    width: 160px;
    height: 80px;
    margin-right: 50px;
}

.burger-menu {
    width: 800px;
}

.burger-menu_button {
    visibility: hidden;
}

.burger-menu_nav {
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.burger-menu_nav > .burger-menu_link {
    font: normal normal normal 16px/20px Source Sans Pro;
    letter-spacing: 0;
    color: #FFD354;
    text-decoration: none;
}

.burger-menu_nav > .burger-menu_link:active, .burger-menu_nav > .burger-menu_link:hover{
    color: #FFFFFF;
}

.burger-menu_link:last-child {
    text-decoration: underline;
    font: normal normal bold 24px/31px Source Sans Pro;
    letter-spacing: 0;
    color: #FFFFFF;
    margin-right: 50px;
}

.burger-menu_link:last-child:active, .burger-menu_link:last-child:hover {
    color: #FFC647;
}

div.dropdown {
    position: relative;
}

div.dropdown > div.caption {
    width: 60px;
    height: 40px;
    border: 1px solid #FFC647;
    border-radius: 2px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    font: normal normal bold 13px/15px 'Lato', sans-serif;
    letter-spacing: 0;
    color: #FFD354;
}

div.dropdown > div.list {
    position: absolute;
    border: 1px solid #FFC647;
    border-radius: 2px;
    display: none;
    text-align: center;
    font: normal normal bold 13px/15px 'Lato', sans-serif;
    letter-spacing: 0;
    color: #FFD354;
    background: #0f1429;
    width: 60px;
    top: 26px;
    text-decoration: none;
}


div.dropdown > div.list > div.item {
    margin: 20px auto 20px;
    cursor: pointer;
}

div.dropdown > div.list > div.item > a {
    text-decoration: none;
    color: #FFD354;
}

div.dropdown > div.list > div.item.selected {
    font-weight: bold;
}

div.dropdown > div.caption:hover,
div.dropdown > div.list > div.item > a:hover {
    color: #FFFFFF;
}

div.dropdown > div.list:hover {
    border: 1px solid #FFFFFF;
}

div.dropdown > div.caption:hover {
    color: #fff;
    border: 1px solid #fff;
}

div.dropdown.open > div.caption {
    display: none;
}

div.dropdown.open > div.list {
    display: block;
}

div.dropdown.open {
    width: 60px;
    height: 92px;
}

@media screen and (max-width: 768px) {

    .header_logo {
        position: fixed;
        left: calc(50% - 80px);
    }

    .lan {
        position: fixed;
        top: 45px;
        right: 7%;
    }


    .burger-menu_button {
        border: 1px solid #FFC647;
        border-radius: 2px;
        position: fixed;
        top: 45px;
        left: 7%;
        z-index: 30;
        width: 60px;
        height: 42px;
        -webkit-transition: 0.4s;
        -moz-transition: 0.4s;
        -o-transition: 0.4s;
        transition: 0.4s;
        outline: none;
        background: transparent;
        visibility: visible;
    }

    .burger-menu_button:hover {
        border: 1px solid #FFFFFF;
    }

    .burger-menu_button:hover > .burger-menu_lines,
    .burger-menu_button:hover > .burger-menu_lines::before,
    .burger-menu_button:hover > .burger-menu_lines::after {
        background-color: #FFFFFF;
    }

    .burger-menu_lines::before,
    .burger-menu_lines::after,
    .burger-menu_lines {
        position: absolute;
        width: 20px;
        height: 2px;
        background-color: #FFC647;
        -webkit-transition: 0.4s;
        -moz-transition: 0.4s;
        -o-transition: 0.4s;
        transition: 0.4s;
    }

    .burger-menu_lines::before,
    .burger-menu_lines::after,
    .burger-menu_lines {
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }

    .burger-menu_lines::before {
        content: '';
        top: -8px;
    }

    .burger-menu_lines::after {
        content: '';
        top: 9px;
    }


    .burger-menu_active .burger-menu_lines, .burger-menu_active .burger-menu_button:hover > .burger-menu_lines {
        background-color: transparent;
    }

    .burger-menu_active .burger-menu_lines::before {
        top: 0;
        left: 0;
        transform: rotate(45deg);
    }

    .burger-menu_active .burger-menu_lines::after {
        top: 0;
        left: 0;
        transform: rotate(-45deg);
    }

    .burger-menu_nav {
        margin-top: 116px;
        position: fixed;
        top: 0;
        z-index: 20;
        width: 100%;
        background: #0F1429;
        opacity: 0.9;
        display: flex;
        flex-flow: column;
        height: 40%;
        overflow-y: auto;
        right: -100%;
        -webkit-transition: 0.8s;
        -moz-transition: 0.8s;
        -o-transition: 0.8s;
        transition: 0.8s;
    }

    .burger-menu_active .burger-menu_nav {
        right: 0;
        -webkit-transition: 0.4s;
        -moz-transition: 0.4s;
        -o-transition: 0.4s;
        transition: 0.4s;
    }

    .burger-menu_link {
        text-align: center;
        font: normal normal normal 16px/20px Source Sans Pro;
        letter-spacing: 0;
        color: #FFD354;
        opacity: 1;
        text-decoration: none;
    }
    .burger-menu_link:last-child{
        margin-right: 0;
    }

    .burger-menu_overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100vh;
        height: 100vh;
        z-index: 10;
        opacity: 0.5;
    }

    .burger-menu_active .burger-menu_overlay {
        display: block;
        background-color: rgba(0, 0, 0, 0.5);
    }

    div.dropdown > div.list {
        top: 0;
    }
}

@media screen and (max-width: 320px) {
    .header_logo {
        position: center;
    }
    .burger-menu_button {
        width: 50px;
        height: 40px;
    }
    div.dropdown > div.caption {
        width: 50px;
        height: 40px;
    }

    div.dropdown > div.list {
        right: 0;
        width: 50px;
        top: 0;
    }

    div.dropdown > div.list > div.item {
        height: 20px;
    }
}
@media screen and (min-width: 769px) and  (max-width: 1700px){
    .header_logo {
        margin-left: 20px;
    }
    div.dropdown > div.caption {
        margin-right: 20px;
    }

    div.dropdown > div.list {
        right: 20px;
        top: 0;
    }

    div.dropdown.open {
        width: 80px;
        height: 40px;
    }
}