body {
    margin: 0;
    background-color: #1B242B;
}
/* Container */
.container {
    width: 100%;
    max-width: 1300px;
    margin: 0 auto;
}
/* Images */
.img {
    padding-left: 20px;
    width: 120px;
    height: 50px;
}
.img_about {
    width: 550px;
    height: 350px;
}
.img_nav {
    padding-top: 40px;
}
/* Header */
.header_item {
    border-bottom: 4px solid #2EFF00;
}
.header_iner {
    margin-top: 18px;
    margin-bottom: 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
/* Nav */
.nav {
    text-transform: uppercase;
    font-size: 12px;
    font-family: 'Roboto', sans-serif;
}
.nav_link {
    display: inline-block;
    vertical-align: top;
    text-decoration: none;
    margin: 0 20px; 
    color: white;
    position: relative;
    transition: color 0.3s linear;
}
.nav_link::after {
    content: "";
    display: block;
    width: 100%;
    height: 3px;
    background-color: #2EFF00;
    opacity: 0;
    top: 23px;
    left: 0;
    z-index: 1;
    position: absolute;
    transition: opacity .4s;
}
.nav_link:hover::after {
    opacity: 1;
}
/* Intro */
.intro {
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
}
.intro_title {
    margin: 0 auto;
    color: #2EFF00;
    text-transform: uppercase;
    font-size: 80px;
    font-family: 'Raleway', sans-serif;
    padding-left: 20px;
}
.intro_iner {
    padding-top: 300px;
}
/* Sections */
.section_intro {
    background-image: url(images/katalizator_forma2.jpeg);
    background-position: center center;
    background-repeat: no-repeat;
    background-size: cover;
}
.section_about_us {
    background-color: white;
}
.section_pay {
    background-color: white;
}
.section_species {
    background-color: white;
}
.section_contacts {
    background-color:  white;
}
.footer {
    background-color: #181818;
}
/* h1,h2,h3,h4,h5,h6 */
.h1 {
    margin: 0 auto;
    color: white;
    text-transform: uppercase;
    font-family: 'Raleway', sans-serif;
    font-size: 55px;
}
.h2 {
    padding-top: 10px;
    margin: 0 auto;
    color: white;
    text-transform: uppercase;
    font-size: 48px;
    font-family: 'Raleway', sans-serif;
    padding-left: 45px;
}
/* BUTTON */
.button {
    text-decoration: none;
    color: black;
    font-size: 17px;
    background-color: #2EFF00;
    font-family: 'Roboto', sans-serif;
    border-radius: 8px;
    padding: 12px 33px 12px 33px;
    transition: .4s;
}
.button:hover {
    background-color: #1B242B;
    color: white;
}
.button_nav {
    padding-left: 45px;
    padding-top: 30px;
}
.button_program {
    width: 60px;
    height: 60px;
    padding-top: 10px;
    padding-left: 30px;
}
.button_contact {
    display: flex;
}
/* ABOUT */
.about_p {
    font-family: 'Montserrat', sans-serif;
    color: #3B3D42;
    padding-top: 10px;
    line-height: 1.4;
    width: 500px;
}
.about_me {
    display: flex;
    justify-content: space-around;
    padding-bottom: 20px;
    padding-top: 45px;
    border-bottom: 2px solid #2EFF00;
}
.about_h1 {
    text-transform: uppercase;
    color: #3B3D42;
    font-family: 'Montserrat', sans-serif;
    line-height: 1;
    font-size: 38px;
    margin: 0 auto;
    padding-top: 35px;
}
.about_main {
    padding-left: 20px;
}
/* MAIN */
.main_p { 
    width: 530px;
   font-family: 'Mulish', sans-serif; 
   margin-top: 10px;
   font-size: 15px;
   line-height: 1.6;
   color: #3B3D42;
}
.main {
    padding-top: 30px;
}
/* PAY */
.pay {
    background-color: white;
}
.pay_h1 {
    text-transform: uppercase;
    color: black;
    font-size: 40px;
    font-family: 'Raleway', sans-serif;
    display: flex;
    justify-content: center;
    margin: 0 auto;
    padding-top: 80px;
}
.pay_item {
    display: flex;
    align-items: center;
    justify-content: space-around;
    padding-top: 50px;
    padding-bottom: 70px;
}
.pay_main {
    width: 350px;
    height: 300px;
    background: #F6F6F7;
    padding: 30px;
    box-sizing: border-box;
    transition: .8s;
    border-radius: 20px;
    
}
.pay_main:hover {
    background: #2EFF00;
}
.pay_main:hover i  {
    color: #3B3D42;
}
.pay_main i {
    display: flex;
    justify-content: space-around;
    color: #2EFF00;
    font-size: 65px;
    transition: .8s;
}
.pay_title {
    font-family: 'Roboto', sans-serif;
    font-size: 33px;
    padding-top: 20px;
    margin: 0 auto;
    color: #3B3D42;
    display: flex;
    text-align: center;
    justify-content: space-around;
}
.pay_p { 
    font-family: 'Mulish', sans-serif; 
    padding-left: 15px;
    font-size: 16px;
    padding-top: 20px;
    text-align: center;
}
/* SERVICES */
.services_h1 {
    text-transform: uppercase;
    font-family: 'Montserrat', sans-serif;
    color: white;
    font-size: 40px;
    margin: 0 auto;
    border-bottom: 2px solid;
    padding-left: 50px;
    padding-right: 50px;
    border-color: #2EFF00;
    padding-top: 90px;
    padding-bottom: 15px;
    margin-bottom: 30px;
}
.services {
    display: flex;
    justify-content: center;
    margin: 0 auto;
}
.services_main i {
    color: white;
    font-size: 60px;
    padding-top: 20px;
    transition: .4s;
}
.services_main:hover {
    border-color: #2EFF00;
}
.services_main:hover i {
    color: #2EFF00;
}
.services_main:hover span {
    color: #2EFF00;
}
.services_main {
    display: flex;
    flex-direction: column;
    align-items: center;
    border-style: solid;
    width: 360px;
    height: 160px;
    border-color: white;
    border-radius: 15px;
    border-width: 2px;
    margin-top: 50px;
    cursor: pointer;
    transition: .4s;
}
.services_title {
    color: white;
    font-family: 'Roboto', sans-serif;
    text-align: center;
    font-size: 24px;
    max-width: 290px;
    transition: .4s;
}
.services_container {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    padding-bottom: 50px;
}
/* SPECIES */
.species_title {
    color: #3B3D42;
    font-family: 'Montserrat', sans-serif;
    text-transform: uppercase;
    display: flex;
    justify-content: center;
    font-size: 40px;
    padding-top: 80px;
    margin: 0 auto;
}
.species_p {
    display: flex;
    justify-content: center;
    font-family: 'Mulish', sans-serif;
    font-size: 22px;
    margin: 0 auto;
    padding-top: 30px;
    font-weight: 700;
}
.species_nav {
    display: flex;
    justify-content: center;
    font-family: 'Roboto', sans-serif;
    font-size: 20px;
    padding-bottom: 40px;
    padding-top: 20px;
}
.species_main {
    display: flex;
    flex-direction: column;
    padding-top: 50px;
}
.species_item {
    margin-left: 10px;
    margin-right: 10px;
    color: #2EFF00;
}
.species_img {
    width: 350px;
    height: 200px;
    border-radius: 10px;
}
.species_main_item {
    display: flex;
    justify-content: space-around;
}
/* CONTACTS */
.contacts_title  {
    color: #3B3D42;
    font-family: 'Montserrat', sans-serif;
    text-transform: uppercase;
    font-size: 40px;
    margin: 0 auto;
    padding-top: 50px;
}
.contacts_main {
    display: flex;
    justify-content: center;
    border-top: 2px solid;
    border-color: #2EFF00;
}
.contacts_nav {
    display: flex;
    justify-content: space-around;
    padding-top: 60px;
    padding-bottom: 60px;
}
.contacts {
    font-family: 'Montserrat', sans-serif;
    font-size: 25px;
}
.contacts_map_paragraph {
    font-family:'Rubik', sans-serif;
    margin: 0 auto;
    font-size: 18px;
}
.contacts_container_map {
    padding-top: 10px;
}
.contacts_map_title {
    font-family: 'Rubik', sans-serif;
    font-size: 20px;
    padding-top: 5px;
}
.contacts_map_main {
    padding-top: 5px;
    line-height: 25px;
}
.contacts_map i {
    font-size: 50px;
}
.contacts_oclock i {
    font-size: 50px;
}
.contacts_nav_item {
    padding-left: 10px;
}
.contacts_main_item {
    display: flex;
}
.contacts_item {
    display: flex;
    flex-direction: column;
}
/* FOOTER */
.footer_h1 {
    text-transform: uppercase;
    color: white;
    font-family: 'Roboto', sans-serif;
    margin: 0;
    font-size: 20px;
}
.footer_p {
    color: white;
    max-width: 400px;
    font-family: 'Mulish', sans-serif;
    margin: 0;
    font-size: 16px;
    padding-top: 20px;
}
.footer_wrapper {
    display: flex;
    justify-content: space-between;
    padding-top: 70px;
    padding-bottom: 70px;
}
.footer_link {
    text-decoration: none;
    color: white;
    text-transform: uppercase;
    font-family: 'Roboto', sans-serif;
    padding-left: 10px;
}
.footer_link_item {
    text-decoration: none;
    color: black;
    font-family: 'Lato', sans-serif;
    font-weight: 600;
    padding-left: 10px;
    font-size: 17px;
}
.footer_item {
    padding-top: 30px;
}
.footer_container_item { 
    border-style: solid;
    border-radius: 5px;
    border-color: white;
    padding: 12px 26px 12px 26px;
    width: 274px;
    border-width: 1px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: .4s;
}
.footer_container_main {
    display: flex;
}
.footer_main i {
    font-size: 20px;
}
.footer_item i {
    color: white;
    font-size: 20px;
}
.footer_main {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.footer_main_item {
    background-color: white;
    padding: 12px 70px 12px 70px;
    border-radius: 5px;
    transition: .4s;
    cursor: pointer;
}
.footer_container_item:hover {
    background-color: white;
}
.footer_container_item:hover i {
    color: black;
}
.footer_container_item:hover a {
    color: black;
}
.nav-toggle {
    display: none;
}
.header,.fixed {
    background-color: #1b242b;
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    z-index: 1000;
    transform: translate3d(0, 0, 0);
}

/* SCREEN 1330px */

@media (max-width: 1330px) {
    .footer_wrapper {
        justify-content: space-around;
    }
}

/* SCREEN 1280px */

@media (max-width: 1280px) {
    .h1 {
        padding-left: 30px;
    }
    .footer_wrapper {
        justify-content: space-around;
    }
}

/* SCREEN 1115px */

@media (max-width: 1115px) {
    .img_about {
        width: 420px;
        height: 270px;
    }
    .main_p {
        width: 420px;
    }
    .pay_main {
        width: 280px;
    }
    .about_h1 {
        padding-top: 20px;
    }
    .species_img {
        width: 280px;
    }
}

/* SCREEN 1024px */

@media (max-width: 1024px) {
    .species_img {
        width: 300px;
        height: 180px;
    }
}

/* SCREEN 940px */

@media (max-width: 940px) {

}

/* SCREEN 912px */

@media (max-width: 912px) {
    .about_p {
        width: 470px;
    }
    .about_me {
        padding-left: 30px;
        padding-right: 30px;
    }
    .img_about {
        width: 400px;
        height: 250px;
    }
    .main_p {
        width: 400px;
    }
    .species_img {
        width: 270px;
        height: 160px;
    }
    .species_nav {
        font-size: 18px;
    }
}

/* SCREEN 820px */

@media (max-width: 825px) {
    .about_me {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .img {
        padding-left: 10px;
    }
    .img_nav {
        padding-top: 20px;
    }
    .header_iner {
        padding-left: 20px;
        padding-right: 20px;
    }
    .footer_wrapper {
        padding-left: 20px;
        padding-right: 20px;
    }
    .contacts {
        font-size: 23px;
    }
    .contacts_nav_item {
        padding-left: 5px;
    }
    .about_p {
        width: 500px;
    }
    .contacts_nav {
        padding-left: 20px;
        padding-right: 20px;
    }
    .contacts_map i {
        font-size: 45px;
    }
    .contacts_oclock i {
        font-size: 45px;
    }
    .nav_link {
        margin-right: 9px;
        margin-left: 9px;
    }
    .h1 {
        padding-left: 20px;
        font-size: 50px;
    }
    .h2 {
        font-size: 45px;
    }
    .intro_title {
        font-size: 75px;
    }
    .species_img {
        width: 240px;
        height: 160px;
    }
    .species_nav {
        font-size: 17px;
    }
    .services_main {
        width: 330px;
    }
    .intro {
        height: 85vh;
    }
    .main_p {
        font-size: 14px;
        margin-bottom: 15px;
        width: 530px;
    }
    .pay_p {
        font-size: 13px;
        padding-top: 0;
        padding-left: 10px;
    }
    .pay_item {
        padding-bottom: 50px;
        justify-content: space-evenly;
    }
    .pay_main {
        width: 230px;
        height: 225px;
    }
    .species_main_item {
        justify-content: space-evenly;
    }
    .pay_main i {
        font-size: 50px;
    }
    .pay_title {
        padding-top: 10px;
        font-size: 25px;
        text-align: center;
    }
    .footer_p {
        max-width: 370px;
    }
}

/* SCREEN 717px */

@media (max-width: 717px) {
    .nav_link::after {
        top: 100%;
    }
    .nav {
       position: absolute;
       transition: 0.5s;
       top: 100%;
       width: 100%;
       left: -100%;
       background-color: #1b242b; 
    }
    .nav.active {
        left: 0;
        transition: 0.5s;
        border-bottom: 3px solid #2EFF00;
    }
    .nav_link {
        display: block;
        margin: 0;
        padding: 11px 20px;
        font-size: 13px;
    }
    .nav-toggle {
        padding: 10px 0;
        width: 30px;
        position: absolute;
        display: block;
        font-size: 0;
        color: transparent;
        border: 0;
        background: none;
        top: 30px;
        right: 30px;
        cursor: pointer;
        z-index: 1;
    }
    .nav-toggle_item {
        display: block;
        width: 100%;
        height: 3px;
        background-color: white;
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        margin: auto;
    }
    .nav-toggle.active .nav-toggle_item {
        background: none;
    }
    .nav-toggle.active 
    .nav-toggle_item::before {
        transform-origin: left top;
        transform: rotate(45deg)
        translate3d(0px, -2px, 0);
    }
    .nav-toggle.active
    .nav-toggle_item::after {
        transform-origin: left bottom;
        transform: rotate(-45deg)
        translate3d(-1px, 3px, 0);
    }
    .nav-toggle_item::before,
    .nav-toggle_item::after {
        content: "";
        width: 100%;
        height: 3px;
        background-color: white;
        transition: transform .4s linear;
        position: absolute;
        transition: .4s;
        left: 0;
        z-index: 1;
    }
    .nav-toggle_item::before {
        top: -8px;
    }
    .nav-toggle_item::after {
        bottom: -8px;
    }
    .h2 {
        font-size: 33px;
        padding-left: 35px;
    }
    .h1 {
        font-size: 33px;
    }
    .intro_title {
        font-size: 57px;
    }
    .species_p {
        flex-direction: column;
        align-items: center;
    }
    .footer_p {
        max-width: 340px;
    }
    .footer_main_item {
        padding: 12px 60px 12px 60px;
    }
    .footer_link {
        font-size: 15px;
    }
    .footer_container_item {
        padding: 12px 25px 12px 25px;
    }
    .species_img {
        width: 220px;
        height: 150px;
    }
    .species_nav {
        font-size: 15px;
    }
    .button_program {
        width: 50px;
        height: 50px;
    }
    .pay_main {
        width: 220px;
    }
    .intro_iner {
        padding-top: 115px;
    }
    .button {
        font-size: 14px;
    }
}

/* SCREEN 425px */

@media (max-width: 425px) {
    .section_intro {
        width: 100%;
        height: 80vh;
        min-height: 600px;
    }
    .intro {
        height: 80vh;
        min-height: 600px;
    }
    .intro_iner {
        padding-top: 160px;
    }
    .nav_link::after {
        top: 100%;
    }
    .nav {
       position: absolute;
       transition: 0.5s;
       top: 100%;
       width: 100%;
       left: -100%;
       background-color: #1b242b; 
    }
    .nav.active {
        left: 0;
        transition: 0.5s;
        border-bottom: 3px solid #2EFF00;
    }
    .nav_link {
        display: block;
        margin: 0;
        padding: 11px 20px;
        font-size: 15px;
    }
    .nav-toggle {
        padding: 10px 0;
        width: 30px;
        position: absolute;
        display: block;
        font-size: 0;
        color: transparent;
        border: 0;
        background: none;
        top: 30px;
        right: 30px;
        cursor: pointer;
        z-index: 1;
    }
    .nav-toggle_item {
        display: block;
        width: 100%;
        height: 3px;
        background-color: white;
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        margin: auto;
    }
    .nav-toggle.active .nav-toggle_item {
        background: none;
    }
    .nav-toggle.active 
    .nav-toggle_item::before {
        transform-origin: left top;
        transform: rotate(45deg)
        translate3d(0px, -2px, 0);
    }
    .nav-toggle.active
    .nav-toggle_item::after {
        transform-origin: left bottom;
        transform: rotate(-45deg)
        translate3d(-1px, 3px, 0);
    }
    .nav-toggle_item::before,
    .nav-toggle_item::after {
        content: "";
        width: 100%;
        height: 3px;
        background-color: white;
        transition: transform .4s linear;
        position: absolute;
        transition: .4s;
        left: 0;
        z-index: 1;
    }
    .nav-toggle_item::before {
        top: -8px;
    }
    .nav-toggle_item::after {
        bottom: -8px;
    }
    .header.fixed {
        background-color: #1b242b;
        position: fixed;
        top: 0;
        right: 0;
        left: 0;
        z-index: 1000;
        transform: translate3d(0, 0, 0);
    }
    .header.active {
        background-color: #1B242B;
    }
    .header_iner {
        padding-left: 0;
        padding-right: 0;
        margin-top: 15px;
        margin-bottom: 15px;
    }
    .h1 {
        font-size: 30px;
        max-width: 250px;
        text-align: inherit;
        margin-left: 10px;
    }
    .h2 {
        font-size: 30px;
        padding-top: 0;
        padding-left: 25px;
        max-width: 250px;
        margin-left: 0;
    }
    .button {
        font-size: 15px;
    }
    .button_contact {
        flex-direction: column;
    }
    .button_nav {
        padding-left: 25px;
        padding-top: 30px;
    }
    .pay_h1 {
        padding-top: 50px;
        text-align: center;
        width: 200px;
    }
    .pay_main {
        margin-top: 30px;
        text-align: center;
        min-height: 300px;
        width: 320px;
        height: 280px;
    }
    .species_p {
        flex-direction: column;
        align-items: center;
    }
    .species_main{
        align-items: center;
        padding-top: 30px;
    }
    .species_img {
        width: 330px;
        height: 180px;
    }
    .species_title {
        text-align: center;
        padding-top: 50px;
        font-size: 35px;
    }
    .species_nav {
        font-size: 25px;
        text-align: center;
        max-width: 250px;
    }
    .species_main_item {
        flex-direction: column;
    }
    .contacts_main_item {
        flex-direction: column;
    }
    .services_main {
        width: 340px;
    }
    .services_h1 {
        font-size: 35px;
    }
    .contacts_nav {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding-top: 20px;
    }
    .contacts_map i {
        padding-top: 30px;
    }
    .contacts_oclock i {
        padding-top: 30px;
    }
    .contacts_title {
        padding-top: 40px;
        font-size: 35px;
    }
    .footer_p {
        max-width: 320px;
    }
    .footer_wrapper {
        flex-direction: column-reverse;
        align-items: center;
        text-align: center;
    }
    .footer_container {
        padding-top: 60px;
    }
    .pay_item {
        display: flex;
        flex-direction: column;
        align-items: center;
        padding-top: 20px;
    }
    .img_nav {
        display: flex;
        flex-direction: column;
        align-items: center;
        padding-top: 20px;
    }
    .about_me {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .intro_title {
        font-size: 40px;
        padding-left: 25px;
    }
    .img_about {
        width: 300px;
        height: 180px;
    }
    .about_p {
        font-size: 12px;
        max-width: 310px;
        padding-top: 5px;
    }
    .about_h1 {
        padding-bottom: 5px;
    }
    .main_p {
        font-size: 12px;
        max-width: 320px;
    }
    .pay_main i {
        font-size: 65px;
    }
    .pay_title {
        padding-top: 20px;
        font-size: 33px;
    }
    .pay_p {
        padding-left: 15px;
        font-size: 16px;
        padding-top: 20px;
    }
    .img {
        padding-left: 30px;
        padding-bottom: 0;
        width: 120px;
        height: 50px;
    }
    .main {
        padding-top: 0;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .main_button {
        padding-top: 25px;
        padding-left: 15px;
    }
    .button_program {
        width: 45px;
        height: 45px;
        padding-left: 20px;
    }
}

/* SCREEN 360px */

@media (max-width: 360px) {
    .services_main {
        width: 310px;
        height: 160px;
    }
    .species_nav {
        font-size: 23px;
    }
    .footer_link_item {
        font-size: 16px;
    }
    .footer_link {
        font-size: 15px;
    }
} 

/* SCREEN 280px */

@media (max-width: 280px) {
    .h1, .h2, .species_title {
        font-size: 25px;
    }
    .intro_title {
        font-size: 30px;
    }
    .pay_h1 {
        font-size: 35px;
    }
    .button {
        font-size: 14px;
    }
    .img_about {
        width: 250px;
    }
    .main_p, .about_p, .footer_p {
        max-width: 250px;
    }
    .pay_main {
        max-height: 300px;
        width: 230px;
    }
    .services_main {
        width: 230px;
        height: 170px;
    }
    .services_title {
        max-width: 210px;
        font-size: 20px;
    }
    .species_p {
        text-align: center;
    }
    .species_img {
        width: 250px;
        height: 160px;
    }
    .contacts_title, .about_h1 {
        font-size: 33px;
    }
    .footer_link {
        font-size: 12px;
        padding-left: 6px;
    }
    .footer_container_item {
        padding: 12px 10px 12px 10px;
    }
    .footer_link_item {
        font-size: 15px;
    }
    .footer_main_item {
        padding: 12px 30px 12px 30px;
    }
    .footer_container_main {
        align-items: center;
    }
    .services_h1 {
        font-size: 34px;
    }
}