@keyframes rotate-center {
    0% {
      -webkit-transform: rotate(0);
              transform: rotate(0);
    }
    100% {
      -webkit-transform: rotate(360deg);
              transform: rotate(360deg);
    }
}

* {
    margin: 0;
    padding: 0;
}

*::selection {
    background-color: black;
    color: white;
}

.all {
    font-family: 'Roboto', sans-serif;
    font-style: normal;
    font-weight: 400;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    background: #213B7E;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    padding-left: calc(50% - 1268px / 2);
    padding-right: calc(50% - 1268px / 2);
    margin-bottom: 33px;
    position: relative;
}

.logotype {
    width: 50px;
}

.menu {
    display: flex;
    list-style-type: none;
    margin-left: 52px;
}


.menu__link:hover {
    transition: 0.3s;
    box-shadow: 5px 5px 5px rgba(0, 0, 0, .25);
    border: 1px solid #fff;
}

.menu__link_active:hover {
    box-shadow: 5px 5px 5px rgba(0, 0, 0, .25);
}

.menu__link {
    font-size: 20px;
    line-height: 23px;
    text-decoration-line: unset;
    color: #FFFFFF;
    padding: 28px 18px;
    display: block;
    text-align: center;
}

.menu__link_active {
    color: #213B7E;
    background-color: #FFFFFF;
    text-decoration: none;
    border: 1px solid #213B7E;
}


.button {
    width: 153px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #EA5D21;
    font-style: normal;
    font-weight: 600;
    font-size: 18px;
    line-height: 21px;
    color: #fff;
    text-decoration: none;
}

.button:hover {
    box-shadow: 5px 5px 5px rgba(0, 0, 0, .25);
    border: 1px solid #000;
    box-sizing: border-box;
}

.logotype:hover {
    box-shadow: 5px 5px 5px rgba(0, 0, 0, .25);
    border: 1px solid #000;
    box-sizing: border-box;
}

.student__all:hover {
    box-shadow: 5px 5px 5px rgba(0, 0, 0, .25);
    border: 1px solid #00000055;
    box-sizing: border-box;
}


.content {
    padding-left: calc(50% - 911px / 2);
    padding-right: calc(50% - 911px / 2);
    flex-grow: 1;
    position: relative;
    
}

.title {
    font-weight: 700;
    font-size: 30px;
    line-height: 35px;
    color: #000000;
    margin-bottom: 32px;
}

.content__img_classroom {
    margin-bottom: 15px;
}

.content__img_my {
    margin-bottom: 15px;
}

.content_info {
    display: flex;
    justify-content: space-between;
}

.content__section {
    width: 633.5px;
}

.subtitle__article {
    margin-bottom: 10px;
    font-style: normal;
    font-weight: 400;
    font-size: 25px;
    line-height: 29px;
    color: #000000;
}

.about__text {
    margin-bottom: 15px;
    font-size: 18px;
    line-height: 21px;
    color: #000000;
}

.self {
    color: #CF5510;
}

.heading {
    position: relative;
    width: 129px;
    height: 100px;
    display: flex;
    margin-top: 47px;
    margin-right: 23px;
    font-family: 'Lobster', cursive;
    font-style: normal;
    font-weight: 400;
    font-size: 36px;
    line-height: 45px;
    color: #646464;
}

.heading:hover {
    -webkit-animation: rotate-center 0.6s ease-in-out both;
    animation: rotate-center 0.6s ease-in-out 0.3s both;
}

.quotation-marks {
    font-size: 64px;
}

.quotation-marks_left {
    position: absolute;
    left: -32px;
    top: 10px;
}

.quotation-marks_right {
    position: absolute;
    top: 55px;
    right: -20px;
}

.footer_section {
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #213B7E;
    color: #FFFFFF50;
    font-size: 20px;
    line-height: 23px;
    margin-top: 33px;
}

.footer__link {
    color: #FFFFFF50;
}

.content__students {
    padding-left: calc(50% - 1202px / 2);
    padding-right: calc(50% - 1202px / 2);
    flex-grow: 1;
    position: relative;
}

.subtitle {
    font-style: normal;
    font-weight: 700;
    font-size: 30px;
    line-height: 35px;
    color: #000000;
}

.students__gallery {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
    box-sizing: border-box;
}

.student__all {
    width: 200px;
    height: 270px;
    margin-top: 25px;
}

.student__all img {
    cursor: pointer;
}

.student__roll1 {
    box-sizing: border-box;
}

.student__name {
    font-size: 20px;
    line-height: 23px;
    height: 30px;
    color: #000000;
    text-align: center;
    width: 200px;
    margin-top: 8px;
}

.student__second {
    position: relative;
    box-sizing: border-box  ;
}

.student__second::after {
    content: 'НОВИЧОК';
    position: absolute;
    top: -12px;
    right: -13px;
    font-size: 18px;
    line-height: 21px;
    color: #FFFFFF;
    background: #3AA828;
    box-sizing: border-box;
    border-radius: 20px;
    width: 94px;
    height: 24px;
    text-align: center;
    padding-top: 2px;
}

.content__about {
    padding-left: calc(50% - 820px / 2);
    padding-right: calc(50% - 820px / 2);
    flex-grow: 1;
    position: relative;
}

.about__video_text {
    font-size: 25px;
    line-height: 29px;
    color: #000000;
    margin-top: 25px;
    margin-bottom: 15px;
}

.content_contact {
    padding-left: calc(50% - 1268px / 2);
    padding-right: calc(50% - 1268px / 2);
    flex-grow: 1;
    position: relative;
}

.subtitle_map {
    margin-left: 16%;
    margin-bottom: 25px;
}

.contacts__our {
    margin-top: 15px;
    margin-bottom: 15px;
    margin-left: 16%;
}

.contacts__subtitle {
    font-style: normal;
    font-weight: 400;
    font-size: 25px;
    line-height: 29px;
    color: #000000;
    margin-bottom: 10px;
}

.contacts_text {
    font-size: 18px;
    line-height: 21px;
    color: #000000;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 63px;
}

.contact__telephone {
    color: #000000;
}

.popup {
    display: none;
    position: absolute;
    width: 500px;
    top: 150px;
    left: calc(50% - 500px/2);
    padding: 24px 28px 56px 28px;
    flex-direction: column;
    align-items: center;
    background: #FFFFFF;
    border: 1px solid #213B7E;
    box-sizing: border-box;
    box-shadow: 5px 5px 5px rgba(0, 0, 0, .25);
    z-index: 100;
}

.close {
    position: absolute;
    top: -15px;
    right: 6px;
    width: 40px;
    height: 40px;
    border-radius: 40px;
    z-index: 1;
    margin: 20px auto;
    cursor: pointer;
}
.close:before {
    content: '+';
    color: #000;
    opacity: .7;
    position: absolute;
    z-index: 2;
    transform: rotate(45deg);
    font-size: 50px;
    line-height: 1;
    top: -5px;
    left: 6px;
    transition: all 0.3s cubic-bezier(0.77, 0, 0.2, 0.85);
}
.close:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 100%;
    background: #EA6113;
    z-index: 1;
    transition: all 0.3s cubic-bezier(0.77, 0, 0.2, 0.85);
    transform: scale(0.01);
}

.close:hover:after {
    transform: scale(1);
}
.close:hover:before {
    transform: scale(0.8) rotate(45deg);
    color: #fff;
}

.popup_heading {
    font-weight: 400;
    font-size: 24px;
    line-height: 28px;
    text-align: center;
    margin-bottom: 36px;
    color: #000000;
}

.popup_login {
    height: 55px;
    margin-bottom: 56px;
    background: #FFFFFF;
    border: 1px solid #808080;
}

.popup__password {
    height: 55px;
    margin-bottom: 56px;
    background: #FFFFFF;
    border: 1px solid #808080;
    border-collapse: collapse;
}

.popup_button {
    width: 153px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #EA6113;
    font-style: normal;
    font-weight: 600;
    font-size: 18px;
    line-height: 21px;
    color: #fff;
    text-decoration: none;
    margin-left:calc(50% - 153px/2);
}

.popup_button:hover {
    box-shadow: 5px 5px 5px rgba(0, 0, 0, .25);
    border: 1px solid #000;
    box-sizing: border-box;
}


.popup__password_windows {
    width: 100%;
    height: 100%;
    border: 0px;
    font-weight: 400;
    font-size: 24px;
    line-height: 28px;
    padding-left: 14px;
    padding-right: 14px;
    color: #808080;
    box-sizing: border-box;
}

.visible {
    display: block;
}

.navigate_hide_button {
    z-index: -100;
    width: 50px;
    height: 50px;
    background: #EA6113;
    position: absolute;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding: 9px;
    box-sizing: border-box;
}

.navigate_hide {
    z-index: 100;
    display: none;
    position: absolute;
    left: -100vw;
    width: 100vw;
    background-color: #213B7E;
    top: -24px;
}

.visible_mobile {
    left: 0px;
}

.menu_color {
    background-color: #213B7E;
}

.burger {
    width: 34px;
    height: 7px;
    background-color: #213B7EDD
}

.title::before {
    content: '👨🏼‍🎓 ' ;
}

.subtitle::before {
    content: '👨🏼‍🎓 ' ;
}

.block {
    margin-top: 18px;
    margin-bottom: 18px;
}

.wellcome {
    font-style: normal;
    font-weight: 400;
    font-size: 25px;
    line-height: 29px;
    margin-bottom: 12px;
}

.hard_skills {
    margin-left: 20px;
    padding-left: 20px;
}

.hard_skill {
    padding-left: 20px;
}
.hard_skill a {
    text-decoration-line: unset;
    cursor: pointer;
}

.hard_skilling {
    padding-left: 20px;

}

.letter {
    color: red;
    font-size: 200%;
    font-family: serif;
    top: 5px;
}



.learned {
    color: green;
}

.study {
    color: darkorange;
}

.unexplored {
    color: red;
}

.skills1 {
    list-style-type: disclosure-open;
    padding-left: 20px;
    margin-top: 20px;
    margin-left: 20px;
    line-height: 25px;
}

.skills2 {
    list-style-type: disclosure-closed;
}

.student__smith {
    display: none;
    width: 200px;
    height: 270px;
}

.student__djohn {
    display: none;
    width: 200px;
    height: 270px;
}

.student__tomm {
    display: none;
    width: 200px;
    height: 270px;
}

.student__leo {
    display: none;
    width: 200px;
    height: 270px;
}

.student__robert {
    display: none;
    width: 200px;
    height: 270px;
}

.visible_student {
    display: block;
}

.invisible_student {
    display: none;
}


@media (max-width: 1300px) {

    .header {
        padding-left: 12px;
        padding-right: 12px;
    }

    .content_contact {
        padding: 12px;
    }

    .content_map {
        width: 100%;
    }
}

@media (max-width: 1230px) {

    .content__students {
        padding: 12px;
    }
}

@media (max-width: 1024px) {
   
    .content_video {
        width: 100%;
    }

    .content_map {
        width: 100%;
    }
}

@media (max-width: 940px) {

    .content {
        padding: 12px;
    }
}

@media (max-width: 855px) {

    .content__about {
        padding: 12px;
    }

    .content__section {
        width: 100%;
    }

    .content_info {
        flex-direction: column;
    }

    .heading {
        margin-top: 0px;
        margin-left: 30px;
    }   

    .header {
        padding: 12px 12px;
        flex-direction: row;
        flex-wrap: wrap;
        margin-bottom: 12px;
    }

    .logo_site {
        order: 1;
        height: 50px;
        width: 50%;
    }

    .button {
        order: 2;
    }

    .navigate {
        order: 3;
        flex-grow: 1;
    }

    .menu {
        margin-top: 12px;
        margin-left: 0;
        display: grid;
        grid-template-columns: repeat(5, minmax(100px, 200px));
        justify-content: space-between;
    }

    .menu__link {
        padding: 24px 14px;
        display: flex;
        justify-content: center;
    }

    .content__img_classroom {
        max-width: 100%;
    }

    .content__img_my {
        max-width: 100%;
    }

    .subtitle_map {
        margin-left: 0;
    }

    .content_contact {
        text-align: center;
    }

    .contacts__our {
        margin-left: 0;
        text-align: center;
    }

    .students__gallery {
        justify-content: center;
    }

    .popup {
        top: 160px;
    }

    .popup_login {
        margin-left: 28px;
        margin-right: 28px;
    }

    .popup__password {
        margin-left: 28px;
        margin-right: 28px;
    }
}

@media (min-width:100px) and (max-width: 524px) {

    .navigate {
        display: none;
    }

    .button {
        width: 50%;
    }

    .menu {
        grid-template-columns: repeat(1, minmax(100px, 100vw));
    }

    .content__students {
        padding: 12px;
        flex-grow: 1;
        justify-content: center;
    }

    .content_video {
        width: 100%;
        height: 300px;
    }

    .title {
        margin-bottom: 14px;
    }

    .subtitle {
        text-align: center;
    }

    .about__video_text {
        text-align: center;
    }

    .popup {
        width: 100%;
        top: 74px;
        left: 0;
    }

    .popup_login {
        margin-left: 12px;
        margin-right: 12px;
    }

    .popup__password {
        margin-left: 12px;
        margin-right: 12px;
    }

    .navigate_hide_button {
        z-index: 100;
    }

    .burger {
        z-index: 100;
    }
    .navigate_hide {
        display: block;
    }
}