.main-menu {
    background-color: white;
    order: 4;
}

/*.main-menu button {*/

/*    height: 50px;*/
/*    border: none;*/
/*    background-color: #fff;*/
/*    font-size: 20px;*/
/*    color: #4d595d;*/

/*}*/

/*.header-layout button{*/
/*    border: none;*/
/*    text-shadow: none;*/
/*    box-shadow: none;*/
/*}*/

.main-menu_sticky {
    position: fixed;
    width: 100%;
    top: 0;
    box-shadow: 0 2px 10px rgba(0,0,0,.2);
    z-index: 1500;
    transition: box-shadow .4s ease;
}
.main-menu__btn-burger {
    display: none;
    margin: 5px 0;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: #3779b3;
    position: relative;
    cursor: pointer;
    box-shadow: 0 0 1px rgba(0,0,0,0.2);
}
.main-menu__btn-burger-icon {
    position: absolute;
    top: 50%; margin-top: -1px;
    left: 50%; margin-left: -10px;
    width: 20px;
    height: 2px;
    background-color: #ffffff;
}
.main-menu__btn-burger-icon::before,
.main-menu__btn-burger-icon::after {
    position: absolute;
    top: 50%; margin-top: -1px;
    left: 50%; margin-left: -10px;
    width: 20px;
    height: 2px;
    background-color: #ffffff;
}
.main-menu__btn-burger-icon::before,
.main-menu__btn-burger-icon::after {
    content: '';
    display: block;
    transition: 0.2s ease;
}
.main-menu__btn-burger-icon::before {
    transform: translateY(-5px);
}
.main-menu__btn-burger-icon::after {
    transform: translateY(5px);
}
.main-menu__nav {
    display: flex;
    white-space: nowrap;
}
.main-menu__btn-burger_active .main-menu__btn-burger-icon {
    height: 0;
}
.main-menu__btn-burger_active .main-menu__btn-burger-icon::after {
    transform: rotate(45deg);
}
.main-menu__btn-burger_active .main-menu__btn-burger-icon::before {
    transform: rotate(-45deg);
}
.main-menu__item {
    padding: 0;
    display: block;
    height: 50px;
    line-height: 50px;
    text-align: center;
    color: black;
    box-sizing: border-box;
    flex: 2 1 auto;
    font-size: 20px;
    text-decoration: none;
    transition: background-color 0.3s ease;
}
.main-menu__item:focus {
    outline: 1px dotted;
    box-shadow: none;
    background-color: inherit;
}
.main-menu__item:hover,
.main-menu__item:focus {
    color: black;
    outline-offset: 0;
    text-decoration: none;
}
.main-menu__item:hover {
    background-color: rgba(0, 0, 0, 0.07);
}
.main-menu__item_active {
    background-color: #D4E7F5;
}

a.main-menu__item_active {
    cursor: pointer;
}
.main-menu__item_active:hover,
.main-menu__item_active:active,
.main-menu__item_active:focus {
    background-color: #D4E7F5;
}

.main-menu__alert {
    display: inline-block;
    position: relative;
    width: 17px;
    height: 20px;
    top: 0px;
    right: 18px;
    background: url(/images/icons/sprite.png) -131px -100px no-repeat;
}

.submenu {
    overflow: hidden;
    background-position: top center;
    background-repeat: repeat-x;
    background-color: #D4E7F5;
    background-size: cover;
}
.submenu_main {
    background-image: url("img/bg/main.jpg");
}
.submenu_na {
    background-image: url("img/bg/na.jpg");
}
.submenu_material {
    background-image: url("img/bg/material.jpg");
}
.submenu_service {
    background-image: url("img/bg/service.jpg");
}
.submenu_sprav {
    background-image: url("img/bg/na.jpg");
}
.submenu_expert {
    background-image: url("img/bg/expert.jpg");
}
.submenu_event {
    background-image: url("img/bg/event.jpg");
}
.submenu_contact {
    background-image: url("img/bg/na.jpg");
}
.submenu_event .main-submenu {
    display: block;
}

.main-submenu {
    display: flex;
    padding: 30px 0;
}
.main-submenu__column {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    flex: 1 1 0;
    border-left: 1px solid rgba(0, 0, 0, 0.2);
}

.main-submenu__row-img-button {
    display: flex;
    justify-content: space-between;
    width: 100%;
}

.main-submenu__column:first-child {
    border: 0;
}
.main-submenu__button {
    display: block;
    font-size: 18px;
    line-height: 20px;
    white-space: normal;
    transition: background-color 0.3s ease;
}
.main-submenu__button:hover,
.main-submenu__button:focus {
    background-color: rgba(0, 0, 0, 0.07);
    box-shadow: none;
}
.main-submenu__button .icon-re {
    height: 40px;
    min-width: 40px;
    padding-right: 7px;
    background-size: 40px 40px;
}

.main-submenu__link {
    display: block;
    color: black;
    padding: 0 10px;
    margin: 4px 0;
    font-size: 14px;
    line-height: 14px;
}
.main-submenu .sub_category .main-submenu__link{
    font-size: 16px;
    line-height: 20px;
}

.main-submenu__link-label {
    text-shadow:  0 0 7px black, 0 0 1em rgba(0, 0, 0, 0.35);
}
.main-submenu__link-bg {
    position: relative;
    flex: 1 1 auto;
    height: 118px;
    max-width: 416px;
    margin-right: 22px;
    background-image: url("img/bg-btn/event-webinar.jpg");
    border: 4px solid white;
    text-align: right;
    color: white;
    font-size: 20px;
    line-height: 22px;
    font-weight: bold;
}
.main-submenu__link-bg:last-child {
    margin-right: 0;
}
.main-submenu__link-bg span {
    position: absolute;
    bottom: 10px;
    right: 10px;
}
.main-submenu__link-bg:hover {
    color: #FFF !important;
}

.main-submenu__link-bg_active {
    border-color: #007ab0;
}

.main-submenu__link-bg_event-webinar {
    background-image: url("img/bg-btn/event-webinar.jpg");
}
.main-submenu__link-bg_event-seminar {
    background-image: url("img/bg-btn/event-seminar.jpg");
}
.main-submenu__link-bg_event-cert {
    background-image: url("img/bg-btn/event-cert.jpg");
}

.main-submenu__link-bg_expert-add {
    background-image: url("img/bg-btn/expert-add.jpg");
}
.main-submenu__link-bg_expert-list {
    background-image: url("img/bg-btn/expert-list.jpg");
}
.main-submenu__link-bg_expert-example {
    background-image: url("img/bg-btn/expert-example.jpg");
}

.main-submenu__link_all {
    margin-top: 20px;
    margin-bottom: 7px;
    text-decoration: underline;
    font-size: 16px;
    line-height: 18px;
}
.main-submenu__link:hover,
.main-submenu__link:focus,
.main-submenu__link_all:hover,
.main-submenu__link_all:focus {
    color: black;
}
.main-submenu__link:focus,
.main-submenu__link_all:focus {
    outline: 1px dotted;
    outline-offset: 0;
}

.submenu-nav {
    border-bottom: 2px solid white;
    padding-top: 10px;
}
.submenu-nav__item {
    display: inline-block;
    padding: 15px 10px;
    font-size: 16px;
    background-color: rgba(255, 255, 255, 0.30);
}
.submenu-nav__item:hover {
    background-color: rgba(255, 255, 255, 0.7);
}
.submenu-nav__item_active,
.submenu-nav__item_active:hover,
.submenu-nav__item_active:focus {
    background-color: rgba(255, 255, 255, 1);
}
.submenu-nav__item:focus,
.submenu-nav__item:active {
    box-shadow: none;
}

@media (max-width: 1400px) {
    .main-menu__item {
        font-size: 18px;
    }
    .main-submenu__button .icon-re {
        height: 35px;
        min-width: 35px;
        padding-right: 5px;
        background-size: 35px 35px;
    }
}
@media (max-width: 1200px) {
    .submenu__title {
        font-size: 26px;
        line-height: 28px;
    }
    .main-menu__item {
        font-size: 16px;
        height: 45px;
        line-height: 45px;
    }
    .main-submenu__button .icon-re {
        height: 30px;
        min-width: 30px;
        padding-right: 5px;
        background-size: 30px 30px;
    }
    .main-submenu__button {
        font-size: 16px;
        line-height: 18px;
    }
    .main-submenu__link {
        font-size: 12px;
        line-height: 15px;
    }
    .main-submenu__link-bg {
        font-size: 18px;
        line-height: 20px;
    }
    .main-submenu__link_all {
        font-size: 14px;
        line-height: 14px;
    }
}
@media (max-width: 992px) {
    .submenu__title {
        font-size: 24px;
        line-height: 26px;
    }
    .main-menu__item {
        font-size: 12px;
        height: 45px;
        line-height: 45px;
    }
    .main-submenu__button {
        font-size: 16px;
        line-height: 16px;
    }
    .main-submenu__button .icon-re {
        display: none;
    }
    .main-submenu {
        padding: 15px 0;
    }
}
@media (max-width: 840px) {
    .main-menu__item {
        font-size: 12px;
        height: 40px;
        line-height: 40px;
    }
}

@media (max-width: 768px) {
    .submenu__title {
        font-size: 22px;
        line-height: 24px;
    }
    .main-submenu__link {
        font-size: 12px;
        line-height: 13px;
    }
    .main-submenu__link-bg {
        font-size: 16px;
        line-height: 28px;
        margin-right: 10px;
    }
    .main-submenu__link_all {
        font-size: 14px;
        line-height: 14px;
    }
    .main-menu__item {
        flex: 1 1 50%;
        text-align: left;
        font-size: 15px;
        height: 30px;
        line-height: 30px;
        padding-left: 10px;
    }
    .main-submenu__button {
        font-size: 14px;
        line-height: 14px;
        padding: 3px 5px;
    }
    .main-menu__btn-burger {
        display: block;
    }
    .main-menu__nav {
        display: none;
    }
    .main-menu__nav_active {
        display: flex;
        flex-wrap: wrap;
    }
    .submenu-nav__item {
        font-size: 14px;
    }
}
@media (max-width: 550px) {

}
@media (max-width: 500px) {
    .main-submenu {
        flex-direction: column;
    }
    .main-submenu__button .icon-re {
        display: table-cell;
        height: 30px;
        min-width: 30px;
        padding-right: 5px;
        background-size: 30px 30px;
    }
    .main-submenu__column {
        border: 0;
        margin: 20px 0;
    }
    .submenu_main {
        background-image: none;
    }
    .submenu_na {
        background-image: none;
    }
    .submenu_material {
        background-image: none;
    }
    .submenu-nav__item {
        padding: 5px;
        margin-bottom: 5px;
    }
}

@media (max-width: 424px) {
    .main-submenu__row-img-button {
        flex-direction: column;
    }
    .main-submenu__link-bg {
        font-size: 20px;
        line-height: 22px;
        margin-right: 0;
        margin-bottom: 7px;
    }
}

.icon_1 {
    background-image: url("img/icons/1.png");
}
.icon_2 {
    background-image: url("img/icons/2.png");
}
.icon_3 {
    background-image: url("img/icons/3.png");
}
.icon_4 {
    background-image: url("img/icons/4.png");
}
.icon_5 {
    background-image: url("img/icons/5.png");
}
.icon_6 {
    background-image: url("img/icons/6.png");
}
.icon_7 {
    background-image: url("img/icons/7.png");
}
.icon_8 {
    background-image: url("img/icons/8.png");
}
.icon_9 {
    background-image: url("img/icons/9.png");
}
.icon_10 {
    background-image: url("img/icons/10.png");
}
.icon_11 {
    background-image: url("img/icons/11.png");
}
.icon_12 {
    background-image: url("img/icons/12.png");
}
.icon_13 {
    background-image: url("img/icons/13.png");
}
.icon_14 {
    background-image: url("img/icons/14.png");
}
.icon_15 {
    background-image: url("img/icons/15.png");
}
.icon_16 {
    background-image: url("img/icons/16.png");
}
.icon_17 {
    background-image: url("img/icons/17.png");
}
.icon_18 {
    background-image: url("img/icons/18.png");
}
.icon_19 {
    background-image: url("img/icons/19.png");
}
.icon_20 {
    background-image: url("img/icons/20.png");
}
.icon_21 {
    background-image: url("img/icons/21.png");
}
.icon_22 {
    background-image: url("img/icons/22.png");
}
.icon_23 {
    background-image: url("img/icons/23.png");
}
.icon_24 {
    background-image: url("img/icons/24.png");
}
.icon_25 {
    background-image: url("img/icons/25.png");
}
.icon_26 {
    background-image: url("img/icons/26.png");
}
.icon_27 {
    background-image: url("img/icons/27.png");
}
.icon_28 {
    background-image: url("img/icons/28.png");
}
.icon_29 {
    background-image: url("img/icons/29.png");
}
.icon_30 {
    background-image: url("img/icons/30.png");
}
.icon_31 {
    background-image: url("img/icons/31.png");
}
.icon_32 {
    background-image: url("img/icons/32.png");
}
.icon_33 {
    background-image: url("img/icons/33.png");
}
.icon_34 {
    background-image: url("img/icons/34.png");
}
.icon_35 {
    background-image: url("img/icons/35.png");
}
.icon_36 {
    background-image: url("img/icons/36.png");
}