@media (max-width: 1400px) {
    section.left-frame {
        max-width: 200px;
    }
    
    main {
        justify-content: space-between;
    }
    .hidden-nav-menu {
        width: calc(100% - 100px);
        padding-left: 40px;
    }
    header nav a:nth-child(3),
    header nav a:nth-child(2) {
        display:none;
    }
}

@media (max-width: 1180px) {
    header nav a:nth-child(4),
    header nav a:nth-child(5) {
        display:none;
    }
    .left-frame {
        display:none;
    }
    section.main-frame {
        width: 100%;
    }
    nav.mobile-header {
        width: 100vw;
        position: fixed;
        border-radius: 0;
        height: 170px;
        display: flex;
    }
    .principles-page .col-lg-4 {
        padding-bottom: 20px;
    }
}

@media (max-width: 800px) {
    header nav {
        display: none;
    }
    nav.mobile-header {
        max-height: 100px;
    }
    
    nav.mobile-header img {
        max-height: 60px;
    }
    
    nav.mobile-header .logo-box {
        padding: 0 !important;
    }
    button.open-menu {
        margin-top: 40px;
    }
    .hidden-nav-menu.active {
        width: calc(100% - 20px) !important;
        right: 10px;
        height: calc(100% - 20px) !important;
        top: 10px;
        border-radius: 25px;
        overflow: auto;
        padding: 50px 20px;
        max-width: calc(100% - 20px) !important;
    }
    
    a.pay-tax {
        margin-top: 20px;
    }
    .blog-box {
        border-radius: 50px !important;
        margin-bottom: 35px
    }
    
    .blog-img {
        background-size:cover !important;
    }
    .row.news-section {
        align-items: center;
        justify-content: center;
    }
    .row.president-title-flexbox {
        text-align: center;
    }
    button.tab-btns {
        width: 50%;
        float: left;
        right: 0 !important;
        padding: 10px;
        text-align: center;
    }
    .principles-page .col-lg-4 {
        padding-bottom: 20px;
    }
    .mobile-quick-menu {
        display: flex;
        position: fixed;
        bottom: 10px;
        left: 10px;
        width: calc(100% - 20px);
        background: white;
        padding: 15px;
        border-radius: 15px;
        align-items: center;
        justify-content: space-between;
        box-shadow: 0px 0px 30px #0e419414;
    }
    
    .mobile-quick-menu a {
        min-width: 80px;
        color: gray;
        text-decoration: none;
    }
    
    a.mobile-action-center.text-center {
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        background: #1E4F9C;
        height: 100px;
        margin-bottom: 15px;
        padding-top: 20px;
        border-radius: 5px;
        z-index: 2;
        color: white;
        box-shadow: 0px 0px 30px #0e419414;
    }
}