.a {
  position: relative;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  width: 100%;
  height: 1px;
  padding-top: 100%;
}
.a img {
  position: absolute;
  left: 0px;
  top: 0px;
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
}

@media (max-width: 1365.98px) {
  .gutter-40 {
    margin: 0 -15px;
  }
  .gutter-40 > [class^=col] {
    padding: 0 15px;
  }
  .gutter-50 {
    margin: 0 -15px;
  }
  .gutter-50 > [class^=col] {
    padding: 0 15px;
  }
  .gutter-100 {
    margin: 0 -15px;
  }
  .gutter-100 > [class^=col] {
    padding: 0 15px;
  }
  .gutter-120 {
    margin: 0 -15px;
  }
  .gutter-120 > [class^=col] {
    padding: 0 15px;
  }
  .gutter-140 {
    margin: 0 -15px;
  }
  .gutter-140 > [class^=col] {
    padding: 0 15px;
  }
}
@media (max-width: 1199.98px) {
  .fs-13s {
    font-size: 12px;
  }
  .fs-14s {
    font-size: 13px;
  }
  .fs-15s {
    font-size: 13px;
  }
  .fs-16s {
    font-size: 15px;
  }
  .fs-17s {
    font-size: 16px;
  }
  .fs-18s {
    font-size: 17px;
  }
  .fs-19s {
    font-size: 18px;
  }
  .fs-20s {
    font-size: 19px;
  }
  .fs-21s {
    font-size: 20px;
  }
  .fs-22s {
    font-size: 21px;
  }
  .fs-25s {
    font-size: 24px;
  }
  .fs-26s {
    font-size: 25px;
  }
  .fs-31s {
    font-size: 27px;
  }
  .fs-38s {
    font-size: 32px;
  }
  .fs-40s {
    font-size: 36px;
  }
  .fs-78s {
    font-size: 54px;
  }
  .mb-10s {
    margin-bottom: 10px;
  }
  .mb-15s {
    margin-bottom: 10px;
  }
  .mb-20s {
    margin-bottom: 15px;
  }
  .mb-25s {
    margin-bottom: 20px;
  }
  .mb-30s {
    margin-bottom: 25px;
  }
  .mb-35s {
    margin-bottom: 30px;
  }
  .mb-40s {
    margin-bottom: 35px;
  }
  .mb-50s {
    margin-bottom: 40px;
  }
  .mb-60s {
    margin-bottom: 50px;
  }
  .mb-65s {
    margin-bottom: 55px;
  }
  .mb-70s {
    margin-bottom: 60px;
  }
  .mb-80s {
    margin-bottom: 65px;
  }
  .mb-90s {
    margin-bottom: 70px;
  }
  .mb-100s {
    margin-bottom: 80px;
  }
  .mb-115s {
    margin-bottom: 90px;
  }
  .mb-130s {
    margin-bottom: 100px;
  }
  .mb-150s {
    margin-bottom: 120px;
  }
  .mb-190s {
    margin-bottom: 130px;
  }
  .menu-desktop > ul > li:not(:last-child) {
    margin-right: 25px;
  }
  .banner-pages .img-banner__pages {
    padding-top: 40%;
  }
}
@media (max-width: 991.98px) {
  /* header */
  .menu-desktop {
    display: block;
  }
  .close-menu-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    color: white;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    width: 20px;
    height: 20px;
  }
  .close-menu-btn:before {
    content: "";
    position: absolute;
    width: 100%;
    height: 2px;
    -webkit-transform: rotate(45deg);
            transform: rotate(45deg);
    top: 10px;
    left: 0;
    background-color: white;
  }
  .close-menu-btn:after {
    content: "";
    position: absolute;
    width: 100%;
    height: 2px;
    -webkit-transform: rotate(-45deg);
            transform: rotate(-45deg);
    top: 10px;
    left: 0;
    background-color: white;
  }
  .main-menu-mobile li:after {
    display: none;
  }
  .logo-menu__mobile {
    display: block;
  }
  .button-phone {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    cursor: pointer;
    width: 35px;
    height: 35px;
    min-width: 35px;
    color: #000000;
    z-index: 1;
    position: relative;
    margin-left: auto;
  }
  .button-phone img {
    -o-object-fit: scale-down;
       object-fit: scale-down;
  }
  .menu-phones {
    display: block;
  }
  .img-why__mains {
    margin-bottom: 20px;
  }
  .img-why__mains img {
    width: 100%;
  }
  .list-logo__partner {
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
  }
  .customer-reviews {
    overflow-x: auto;
    overflow-y: hidden;
  }
  .customer-reviews table {
    width: 850px;
  }
  .consultancy-contact .img-consultancy__contact img {
    width: 100%;
    margin-bottom: 30px;
  }
  .top-footer > .row > [class^=col] {
    margin-bottom: 20px;
  }
  .banner-pages .img-banner__pages {
    padding-top: 50%;
  }
  .author-box__info {
    margin-bottom: 10px;
  }
  .list-faq__marcom {
    margin-bottom: 20px;
  }
  .list-process__order {
    overflow-x: auto;
    overflow-y: hidden;
    -ms-flex-wrap: nowrap;
        flex-wrap: nowrap;
  }
  .list-process__order .items-process__order {
    min-width: 100px;
  }
  .scroll-fixed__footer{
    padding: 10px 0;
  }
  .scroll-fixed__footer span{
    display: block !important;
  }
  .scroll-fixed__footer li{
    font-size: 12px;
  }
  .scroll-fixed__footer a{
    flex-direction: column !important;
    padding: 5px 8px 2px !important;
    border-radius: 8px !important;
  }
  .footer{
    padding-bottom: 80px;
  }

}
@media (max-width: 767.98px) {
  .fs-13s {
    font-size: 13px;
  }
  .fs-14s {
    font-size: 14px;
  }
  .fs-15s {
    font-size: 15px;
  }
  .fs-16s {
    font-size: 16px;
  }
  .fs-17s {
    font-size: 17px;
  }
  .fs-18s {
    font-size: 17px;
  }
  .fs-19s {
    font-size: 17px;
  }
  .fs-20s {
    font-size: 18px;
  }
  .fs-21s {
    font-size: 19px;
  }
  .fs-22s {
    font-size: 20px;
  }
  .fs-25s {
    font-size: 22px;
  }
  .fs-26s {
    font-size: 23px;
  }
  .fs-31s {
    font-size: 25px;
  }
  .fs-38s {
    font-size: 27px;
  }
  .fs-40s {
    font-size: 30px;
  }
  .fs-78s {
    font-size: 35px;
  }
  .mb-10s {
    margin-bottom: 10px;
  }
  .mb-15s {
    margin-bottom: 10px;
  }
  .mb-20s {
    margin-bottom: 10px;
  }
  .mb-25s {
    margin-bottom: 15px;
  }
  .mb-30s {
    margin-bottom: 20px;
  }
  .mb-35s {
    margin-bottom: 25px;
  }
  .mb-40s {
    margin-bottom: 30px;
  }
  .mb-50s {
    margin-bottom: 35px;
  }
  .mb-60s {
    margin-bottom: 40px;
  }
  .mb-65s {
    margin-bottom: 45px;
  }
  .mb-70s {
    margin-bottom: 50px;
  }
  .mb-80s {
    margin-bottom: 55px;
  }
  .mb-90s {
    margin-bottom: 60px;
  }
  .mb-100s {
    margin-bottom: 65px;
  }
  .mb-115s {
    margin-bottom: 70px;
  }
  .mb-130s {
    margin-bottom: 80px;
  }
  .mb-150s {
    margin-bottom: 85px;
  }
  .mb-190s {
    margin-bottom: 90px;
  }
  .mt-50s {
    margin-top: 20px;
  }
  .list-logo__partner .col-logo {
    width: 20%;
  }
  .banner-pages {
    margin-top: 10px;
  }
  .container-breadcrumb {
    top: unset;
    margin-top: 10px;
  }
  .intro-contact__pages {
    margin-bottom: 30px;
    height: auto;
  }
  .content-contact {
    margin-top: 30px;
  }
}
@media (max-width: 575.98px) {
  .fs-13s {
    font-size: 13px;
  }
  .fs-14s {
    font-size: 14px;
  }
  .fs-15s {
    font-size: 15px;
  }
  .fs-16s {
    font-size: 16px;
  }
  .fs-17s {
    font-size: 17px;
  }
  .fs-18s {
    font-size: 16px;
  }
  .fs-19s {
    font-size: 16px;
  }
  .fs-20s {
    font-size: 16px;
  }
  .fs-21s {
    font-size: 17px;
  }
  .fs-22s {
    font-size: 18px;
  }
  .fs-25s {
    font-size: 19px;
  }
  .fs-26s {
    font-size: 20px;
  }
  .fs-31s {
    font-size: 22px;
  }
  .fs-38s {
    font-size: 24px;
  }
  .fs-40s {
    font-size: 26px;
  }
  .fs-78s {
    font-size: 32px;
  }
  .mb-10s {
    margin-bottom: 10px;
  }
  .mb-15s {
    margin-bottom: 10px;
  }
  .mb-20s {
    margin-bottom: 10px;
  }
  .mb-25s {
    margin-bottom: 12px;
  }
  .mb-30s {
    margin-bottom: 15px;
  }
  .mb-35s {
    margin-bottom: 20px;
  }
  .mb-40s {
    margin-bottom: 25px;
  }
  .mb-50s {
    margin-bottom: 30px;
  }
  .mb-60s {
    margin-bottom: 35px;
  }
  .mb-65s {
    margin-bottom: 40px;
  }
  .mb-70s {
    margin-bottom: 45px;
  }
  .mb-80s {
    margin-bottom: 50px;
  }
  .mb-90s {
    margin-bottom: 55px;
  }
  .mb-100s {
    margin-bottom: 60px;
  }
  .mb-115s {
    margin-bottom: 65px;
  }
  .mb-130s {
    margin-bottom: 70px;
  }
  .mb-150s {
    margin-bottom: 80px;
  }
  .mb-190s {
    margin-bottom: 75px;
  }
  .tag-prj__mains li a {
    min-width: 100px;
  }
  .tag-prj__mains li:not(:last-child) {
    margin-right: 5px;
  }
  .list-logo__partner .col-logo {
    width: 33%;
  }
  .banner-pages .img-banner__pages {
    padding-top: 75%;
  }
  .box-key__words {
    padding-right: 0px;
  }
  .item-about__pages {
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
  }
  .item-about__pages .intro-item__about {
    -webkit-box-ordinal-group: 3;
        -ms-flex-order: 2;
            order: 2;
    -webkit-box-flex: unset;
        -ms-flex: unset;
            flex: unset;
    margin: 0px;
    margin-top: 10px;
  }
}