bg-white border-bottom fixed-top, bg-primary px-2 py-2 text-white small d-flex flex-column d-lg-none, mb-2, border ml-1 text-white px-2 rounded-pill f-12, mb-0, border text-white px-2 rounded-pill ml-3 f-12, navbar navbar-expand-lg navbar-light py-3, mr-lg-3 mr-xl-4, navbar-brand py-0, d-none d-xl-inline-block, d-xl-none, d-none border-left pl-3 d-md-inline-block, navbar-toggler, navbar-toggler-icon, collapse navbar-collapse, d-lg-none, navbar-nav mr-auto flex-row flex-wrap justify-content-center, nav-item col-6 col-md-auto, nav-link px-0, nav-item col-6 col-md-auto d-none, navbar-nav flex-row flex-wrap justify-content-md-center, nav-item col-6 col-md-auto trail_course_entry, btn btn-outline-info rounded-pill, nav-item col-6 col-md-auto dropdown border-right d-none d-lg-block, nav-link, dropdown-menu dropdown-menu-right dropdown-contact position-absolute shadow p-4 text-center, mb-3 text-secondary, d-flex align-items-center, list-unstyled ml-3, my-2, ios-app-btn, android-app-btn, my-2 small text-info, nav-item col-6 col-md-auto class_entry, btn btn-link text-info d-flex pr-0 text-decoration-none, pz-icon icon-chevron-right, nav-item col-6 col-md-auto login_register, btn btn-link text-info px-0, modal fade, modal-dialog, modal-content, modal-header, modal-title, close, modal-body, d-md-none, slide-m, row no-gutters, container text-center px-3 py-5, row justify-content-center, col-lg-10, m-title text-black mb-3, m-sub-title text-black, d-flex justify-content-center mb-2, mx-2 mt-3 card-book animate__animated animate__bounceIn, mx-2 mt-3 card-book animate__animated animate__bounceIn animate__delay-300ms, mx-2 mt-3 card-book animate__animated animate__bounceIn animate__delay-600ms, mx-2 mt-3 card-book animate__animated animate__bounceIn animate__delay-900ms, mx-2 mt-3 card-book animate__animated animate__bounceIn animate__delay-1200ms, mx-2 mt-3 card-book animate__animated animate__bounceIn animate__delay-1500ms, container bg-data text-center px-3 py-5, m-title text-white, d-flex justify-content-center mt-5, number-area col-6, p-2 text-center, text-white mb-2 f-28, text-muted f-18, number-area-last col-6, text-muted, btn btn-primary my-2 px-4 mr-4, btn btn-primary my-2 px-4, bg-blue-grey-200 d-block d-sm-none, container text-center py-5, m-sub-title text-black mb-4, card mb-3, card-body, row, ml-3, col-8 text-left, font-weight-bold f-24 mb-2, f-14 ml-3, f-12 text-secondary text-left mb-0, pl-0, f-14 text-left, f-12 text-secondary text-left, d-flex justify-content-center, container bg-grey-100 text-center px-3 py-5, my-3, mb-2 w-100, container text-center px-3 py-5 d-block d-sm-none, container bg-blue-grey-200 text-center px-3 py-5, d-none d-md-block hero-banner, d-none d-md-block bg-grey-150, container text-center px-0 py-5 d-none d-md-block, section-title mb-5 f-28, row card-deck mt-4, d-none d-md-block d-lg-none, mx-2 mt-3 card-book, col-lg-4 col-md-12 d-none d-lg-block card p-4 text-left card-cert, card-title border1 f-28 font-weight-bold, mb-3, mr-2 mb-3 card-book, card-title border2 f-28 font-weight-bold, card-title border3 f-28 font-weight-bold, btn btn-primary px-4 mr-3, btn btn-primary px-4, d-none d-md-block bg-white, section-title mb-5, col-md-6 col-xl-3 mb-2 mb-md-4, card p-3 mx-0 h-100 text-reset text-decoration-none, embed-responsive embed-responsive-4by3 embed-responsive-md-21by9 rounded mb-2, embed-responsive-item bg-image-center, text-left, line-clamp-2 mb-1, card-text small text-secondary line-clamp-1 mt-auto mb-1, card-text, bg-data d-none d-md-block, container text-center px-0 py-5, section-title text-white mb-5 f-28 font-weight-bold, row mt-4, number-area col-sm-6 col-lg-3, p-4 text-center, text-white mb-4 f-40 font-weight-bold, text-muted f-24, number-area-last col-sm-6 col-lg-3, btn btn-primary my-2 px-4 mr-3, bg-blue-grey-200 d-none d-md-block, container py-5, section-title text-center mb-5 f-28, card-deck, card col-lg-6 mb-4 p-0, row no-gutters h-100, col-lg-3 teacher-photo d-none d-lg-block, col-lg-9, card-body p-4, d-flex align-items-end mb-2, font-weight-normal mb-0 f-28, f-18 ml-3 mb-0, f-12 text-secondary, f-14, card col-lg-4 mb-4 p-0, col-lg-4 teacher-photo d-none d-lg-block, col-lg-8, font-weight-normal mb-0 f-18, f-12, feature-1 bg-white py-5 d-none d-md-block, container, col-md-6 col-lg-5 text-lg-left, section-title mr-2 mt-5 f-24, list-group list-group-horizontal text-center mt-4, list-group-item list-group-item-action px-3 f-14 font-weight-bold active, list-group-item list-group-item-action px-3 f-14 font-weight-bold, d-flex mt-5, btn btn-primary my-4 px-4 mr-3, btn btn-primary my-4 px-4, col-md-6 offset-lg-1, tab-content, tab-pane active, card border-0, w-100, tab-pane, feature-2 bg-grey-150 py-5 d-none d-md-block, col-md-6, card p-4 bg-white, font-weight-bold text-center mb-3 f-18, card-top p-4 d-flex justify-content-between, book-level _master _v0, book-level _master _v1, book-level _master _v2, book-level _master _v3, card-bottom d-flex justify-content-around my-4 border-top pt-4, text-center, course-award-icon _lg _v1-0 ml-auto mr-auto, font-weight-bold f-16, align-self-center, pz-icon icon-enter text-muted f-28 font-weight-bold, course-award-icon _lg _v2-0 ml-auto mr-auto, course-award-icon _lg _v3-0 ml-auto mr-auto, col-md-5 offset-1 text-lg-left, feature-3 bg-grey-100 py-5 d-none d-md-block, col-md-5 text-lg-left, col-md-7, card p-4, bg-grey-300 rounded-circle pzChart-wrap mb-4 ml-3 d-none d-xl-block, chartjs-size-monitor, chartjs-size-monitor-expand, , chartjs-size-monitor-shrink, chartjs-render-monitor, pzChart-text, mb-0 f-40 font-weight-bold , mb-0 mt-3 f-16, small text-secondary, d-flex, ml-4 bg-light px-1, f-16, list-inline, list-inline-item mx-1, buliding-icon _b4 mr-1, buliding-icon _b2 mr-1, buliding-icon _b1 mr-1, buliding-icon _b3 mr-1, d-md-none d-lg-block f-16, list-inline d-md-none d-lg-block, list-inline d-md-none d-lg-block , feature-4 bg-blue-grey-200 d-none d-md-block, row justify-content-between, col-md-5 my-5 d-none d-lg-block, carousel slide, carousel-inner, carousel-item h-auto active, card mb-2 p-2, badge color-frm text-white mb-2, line-clamp-2, card-text f-14 mt-3 line-clamp-5, carousel-item h-auto, col-md-6 my-5 d-lg-none, col-md-6 text-lg-left my-5, feature-5 bg-grey-150 py-5 d-none d-md-block, row justify-content-start, col-lg-6 col-md-5 text-lg-left, col-lg-6 d-none d-xl-block, col-md-6 d-xl-none, feature-6 bg-white d-none d-md-block, feature-7, section-title text-center mb-5 d-none d-md-block f-28 font-weight-bold, m-title text-black text-center d-block d-md-none, section-title text-center mt-2 mb-3 d-block d-md-none, card-columns, card p-3, fa fa-smile-o text-primary mr-3, d-flex justify-content-center mt-3, bg-dark py-5 text-secondary, row mb-4 border-bottom border-dark pb-5, col-lg col-xl-2 d-none d-lg-block, flex-grow-1 text-secondary, text-white font-weight-normal mb-3, text-reset, col-lg-4 col-xl-3 d-none d-lg-block, col-lg col-xl-2, d-flex flex-wrap flex-lg-column, mb-3 mr-5 mr-lg-0, d-none d-md-inline-block bg-grey-300, col-lg-4 col-xl-4 d-flex flex-lg-column, mb-3 col-md-6 col-lg-12, pz-icon icon-call mr-2 text-white-50 _sm mt-1, pz-icon icon-email mr-2 text-white-50 _sm mt-1, pz-icon icon-weixin mr-2 text-white-50 _sm mt-1, btn-group dropup, dropdown-menu text-center p-0, small mb-1 mt-2 position-relative, col-auto, media, pz-icon icon-location mr-2 text-white-50 _sm mt-1, media-body text-reset, row border-bottom border-dark pb-4 mb-4 text-center d-none d-md-flex, col-12 text-center mb-4, col small, text-secondary text-decoration-none, rounded-lg, small mb-1 mt-2 text-secondary position-relative, d-flex flex-column flex-column-reverse flex-md-row justify-content-between align-items-center mb-3 small text-secondary, d-flex flex-column flex-md-row align-items-center, mr-1, text-reset mr-3,