@import url("reset.css");
@import url("variables.css");

@font-face {
  font-family: 'Marvel Sans';
  src: url('fonts/MarvelSansVF.woff2') format('woff2-variations'),
  url('fonts/MarvelSansVF.woff') format('woff-variations'),
  url('fonts/MarvelSansVF.ttf') format('truetype-variations');
  font-weight: 10 100;
}

/*
* main container for the whole website
*/
body{
  /* 
  background-color: var(--m-3-black);
  
  Изменить #141218 на --color-neutral-n-10
  Или создать --color-neutral-n-15 ?
  */
  background-color: #141218;

  color: var(--color-neutral-n-100);
  font-size: var(--font-size-16);
  font-weight: 100;

}

#main{
  width: 1160px;
  margin: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
  position: relative;
  margin-top: 120px;
}

.main-layout{
  width: 1160px;
  margin: auto;
}

section.title, section.tabs{
  z-index: 2;
}

section.title, section.tabs >:not(.tabs__content){
  background-color: var(--m-3-black);
}


/* 
* sections (main flexbox layout and gaps)
*/

section.main-image{
  width: 100%;
  height: calc(100vh - 54px);
  background: linear-gradient(180deg, #021655 0%, #102276 100%);
}

section.main-image img{
  height: 100%;
  width: 100%;
}

video{
  height: 100%;
  border-radius: 12px;
}

article.second .right video{
  object-fit: cover;
  height: 250px;
}

 section{
   width: 100%; 
} 


/* section.title,  */
section.tabs>.tabs__choose,
section.tabs>.tabs__content,
section.vendors,
section.instructions,
section.advantages,
section.faq
{
  /* padding: 0px 50px 120px 50px */
  padding-bottom: 120px;
}

.content-title{
  margin-bottom: 30px;
} 


/* headers font (size, weight) settings*/

h1.title__header{
  font-size: var(--font-size-57); 
  font-weight: 10;
  line-height: 64px;
  letter-spacing: -0.25px;
  color: var(--color-secondary-s-90);
  min-width: 55%;
  /* check if needed to change text-wrap to pretty or balance */
  text-wrap: wrap; 
}

h2 {
  line-height: 40px;
  /* padding-bottom: 30px; */
}

h2.tabs__title-role{
  color: var(--color-secondary-s-90);
  padding-bottom: 30px;
}

h2.content-title{
  color: var(--color-neutral-n-100);
  letter-spacing: 0.9px;
}

h2.content-title, h2.tabs__title-role{
  font-size: var(--font-size-32);
  font-weight: 100;
}
h3.title{
  font-size: var(--font-size-22);
  line-height: 28px;
  font-weight: 100;
}

h5.title{
  font-size: var(--font-size-32);
  color: var(--color-neutral-n-90);
  line-height: 40px;
  font-weight: 100;
}


/* 
* styles for each specific section
*/

/* vendors slider */

.swiper {
  width: 100%;
  height: 188px;
  margin: 0;
}

.swiper-button-next::after,
.swiper-button-prev::after {
  content: "";
}

section.vendors .vendors__arrows{
  width: 78px;
  position: absolute;
}

section.vendors .vendors__arrows .arrow{
  width: 24px;
  height: 24px;
  background: url('../images/arrows/arrow_forward_24px.svg') no-repeat center;
  outline: none;
  border: none;
}

section.vendors .vendors__arrows .arrow.left{
  transform: rotate(180deg);
}


/* section with title dirtectly under the img */

section.title{
  padding-top: 47px;
}

section.title>.main-layout>.title__row{
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 133px;
  margin-bottom: 120px;
}

.content article.second .right .metrics{
  height: 250px;
}

.content article.second .right{
  justify-content: center;
}

section.title .main-layout .title__row p.title__subtitle{
  line-height: 24px;
  height: fit-content;
  font-size: var(--font-size-16);
  font-weight: 10;
  line-height: 24px;
  letter-spacing: 0.5px;
  color: var(--color-neutral-n-94);
}


/* setion with role tabs */

section.tabs .tabs__choose{
  height: 130px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: space-between;
  margin-bottom: 100px;
}


/* tabs content */

section.tabs .tabs__content .content article {
  margin-bottom: 120px;
}

section.tabs .tabs__content .content article.third {
  margin-bottom: 0px;
}

section.tabs .tabs__content .content article .text{
  margin: 0 40px;
}

section.tabs .tabs__content .content article .text, .second .left {
  align-content: center;
}

section.tabs .tabs__content .content article .text h5.title, .second .left .text{
  margin-bottom: 16px;
}

article.second .right {
  display: flex;
  align-items: center;
  width: 100%;
}

section.tabs .tabs__content .content article{
  height: 384px;
}

section.tabs .tabs__content .content article .text p.subtitle{
  color: var(--color-neutral-n-80);
  line-height: 24px;
  font-weight: 10;
  letter-spacing: 0.5px;
  font-size: var(--font-size-16);
}

.tabs__content__seller article.second .right{
  background-color: var(--color-neutral-n-0);
  border-radius: 12px 12px 0 0;
}

article.second .right .text .courses-info {
  display: flex;
}

/* active tab */

.tabs__content .content{
  display: none;
}

#active-content{
  display: flex;
  flex-direction: column;
}

/* artictle bocks inside tabs content */

.tabs__content .content article{
  display: flex;
}

/* tabs nav-block */

.tabs__navs{
  display: flex;
  justify-content: space-evenly;
  width: 1160px;
  margin: 0;
}

.tabs__link{
  flex-basis: calc((100vw / 1));
  text-align: center;
  margin: 0 16px;
  font-size: var(--font-size-14);
  font-weight: 60;
  line-height: 20px;
  letter-spacing: 0.1px;
  text-align: center;
  padding: 11px 0;
  color: var(--color-secondary-s-70);
}

.tabs__link.active{
  border-bottom: 5px solid var(--color-secondary-s-70);
}


/* steps instruction */

section.instructions .instruction__steps__row{
  display: flex;
  justify-content: space-between;
  gap: 35px;
}

section.instructions .instruction__steps__row .step{
  display: flex;
  flex-direction: row;
  flex-basis: calc(100% / 4);
  gap: 20px;
}

.instruction__steps__row .step .step-text{
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: calc(100% / 4)
}

.instruction__steps__row .step .step-text p.step__subtitle{
  line-height: 20px;
  font-weight: 10;
  font-size: var(--font-size-14);
  letter-spacing: 0.25px;
  height: 43px;
}

a.registration.instruction__steps__button{
  min-height: 40px;
  padding: 10px;
  display: block;
  min-width: 105px;
  width: 100%;
  height: min-content;
}

.step__img{
  height: 90px;
}

/* button registration*/

a.registration {
  background-color: var(--color-secondary-s-70);
  color: var(--color-neutral-n-100);
  font-size: var(--font-size-14);
  font-weight: 40;
  line-height: 20px;
  letter-spacing: 0.1px;
  text-align: center;
  border-radius: 5px;
  border: 1px solid var(--color-secondary-s-70);
  height: 56px;
  width: 156px;

  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: 12px;
  padding: 0;
}

button.instruction__steps__button.registration {
  margin-top: 10px;
}

.instruction__vendor 
.instruction__steps__row 
.second-step .step-text 
a.registration.instruction__steps__button{
  padding: 10px 20px;
  font-weight: 10;
  min-height: 40px;
}

a.registration img{
  height: 24px;
}


/* advantages reasons */

section.advantages .content{
  display: flex;
  gap: 30px;
}

section.advantages .content .advantages__reason{
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex-basis: calc(100% / 3);
  height: 380px;

  background-color: var(--color-neutral-n-10);
  border-radius: 12px;
  border: 1px solid var(--color-neutral-n-30);
  color: var(--color-neutral-n-90);
}

section.advantages .content .advantages__reason img{
  height: 84px;
  padding-top: 7px;
}

section.advantages .content .advantages__reason p.subtitle.reason{
  font-size: var(--font-size-14);
  font-weight: 10;
  line-height: 20px;
  letter-spacing: 0.25px;
  margin-top: 15px;
}

.advantages__text{
  padding: 14px 40px 50px 40px;
  color: var(--color-neutral-n-90);

}

.advantages__texts{
  margin-bottom: 16px;
}

/* faq */

section.faq img.faq-pic-desk{
  display: block;
  width: fit-content;
  margin: auto;
}

section.faq img.faq-pic-mob{
  display: none;
}

/* cards styles */

section.advantages .content .advantages__reason, 
section.tabs .tabs__content .content article{
  background-color: var(--color-neutral-n-10);
  border-radius: 12px;
  border: 1px solid var(--color-neutral-n-30);
}


/* 
* header
*/
.burger, .burger-menu.hidden,
.mobile,
.fixed
{
  display: none;
}

header{
  background: var(--color-neutral-n-10);
  position: fixed;
  background-color: var(--color-neutral-n-10);
  z-index: 99999;
  width: 100vw;
}

nav{
  display: flex;
  flex-flow: nowrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  /* padding: 0px 150px; */
  margin: 0 auto;
  width: 1160px;
  color: var(--color-neutral-n-100);
  height: 54px;
}

.nav__anchors{
  /* min-width: 70%; */
  display: flex;
  justify-content: stretch;
  align-items: center;
}

.nav__logoImage {
  width: 100%;
  height: 40px;
}

.nav__link.nav__item{
  font-size: 16px;
  font-weight: 10;
  line-height: 24px;
  letter-spacing: 0.5px;
  text-align: left;

  
  height: 56px;
  padding: 16px 24px;
  align-content: center;

  background: transparent;
  color: var(--color-neutral-n-90);
  outline: none;
  border: none;
}

.nav__link.nav__item:hover{
  background-color: var(--color-neutral-n-20);
}

.nav__link.nav__item.active{
  background-color: var(--color-neutral-n-20);
}


/* 
* footer
*/

footer{
  display: flex;
  align-items: center;
  justify-content: center;

  margin: 0 auto;
  width: fit-content;
  min-width: 1100px;
  max-width: 90vw;
  padding-bottom: 55px;
}

footer .desktop .footer__bg-image{
  position: relative;
  width: 100%;
  background-image: url(../images/footer/footer-background-shape.png);
  height: 406px;
  display: flex;
  background-repeat: no-repeat;
}

footer footer__bg-image .invite{
  width: 645px;
  height: 406px;
  display: flex;
  padding-left: 60px;
  padding-right: 111px;
}

.invite__title{
  padding-top: 38px;
}

.invite{
  margin-left: 60px;
  margin-right: 47px;
  width: 246px;
}

.invite__form{
  width: 210px;
  z-index: 999;
  /* margin-left: 47px; */
}

/* или #invite__form__phone */
.invite__form>.phone>input{
  background-color: transparent;
  border: none;
  outline: none;
  width: 100%;
  color:var(--color-neutral-n-100);
}

div.phone{
  display: flex;
  margin-top: 73px;
  margin-bottom: 22px;
  background-color: var(--color-neutral-n-20);
  color: var(--color-neutral-n-80);
  font-size: var(--font-size-16);
  /* font-weight: 400; */
  line-height: 24px;
}
div.phone+label{
  display: block;
  width: 100%;
  color: var(--color-neutral-n-100);
  font-size: var(--font-size-14);
  line-height: 20px;
  font-weight: 10;
  letter-spacing: 0.25px;
}

.invite__form>.phone{
  border-bottom: 1px solid var(--color-neutral-n-80);
}

.social__links{
  margin-bottom: 134px;
  margin-top: 82px;
  margin-left: 772px;
}

.nav-links{
  position: absolute;
  bottom: 0;
  right: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: stretch;
  width: 493px;
  margin-left: 54px;
}

.nav-links__row {
  display: flex;
  justify-content: flex-start;
  align-items: stretch;
}

.nav-link{
  padding: 10px 12px;
  width: max-content;
  font-size: var(--font-size-14);
  font-weight: 10;
  line-height: 20px;
  letter-spacing: 0.1px;
  color: var(--color-secondary-s-80);
}

.links{
  gap: 19px;
  display: flex;
}

.smm__title{
  font-weight: 700;
  color: #81838E;
  font-size: var(--font-size-22);
  line-height: 28px;
  max-width: 203px;
  margin-top: 22px;
}

.smm__link__image {
  width: 38px;
  height: 38px;
}

.invite__title{
  font-weight: 100;
  color: var(--color-neutral-n-100);
  font-size: var(--font-size-32);
  line-height: 40px;
}

/* buttons */

.invite__buttons{
  display: flex;
  flex-direction: column;
  gap: 13px;
  margin-top: 21px;
}

.invite__buttons button{
  width: 236px;
  height: 56px;
  border-radius: 4px;
  color: var(--color-neutral-n-100);
  font-size: var(--font-size-14);
  line-height: 20px;
  letter-spacing: 0.1px;
  font-weight: 10;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 999;
}

.invite__buttons button.student{
  background-color:var(--color-primary-p-16);
  border: none;
}

.invite__buttons button.partner{
  background-color:var(--color-primary-p-16);
  border: none;
}

.invite__buttons button.vendor{
  background-color: var(--color-secondary-s-70);
  border: none;
}
.invite__buttons button img{
  margin-right: 12px;
}

.under-background{
  width: 493px;
    display: flex;
    justify-content: flex-end;
    margin-left: 584px;
    margin-top: 11px;
}

.lowest-row{
  display: flex;
  align-items: center;
  margin-top: 53px;
}

.lowest-row .copyright{
  width: 452px;
  font-weight: 10;
  color: var(--color-neutral-n-90);
  font-size: var(--font-size-12);
  line-height: 16px;
  margin-left: 272px;
}

.lowest-row .logos{
  margin-left: 70px;
}


/* cursor */

button, a, .nav__item{
  cursor: pointer;
}

section.tabs>.tabs__choose{
  padding-bottom: 0px;
}



@media screen and (width < 1160px) and (width > 905px) {

  section.main-image{
    max-height: 600px;
  }

  section.main-image video{
    max-height: 600px;
  }

  .fixed{
    width: 100%;
    position: fixed;
    bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999;
  }

  header>nav>a.registration, header>nav>.nav__anchors {
    display: none;
  }

  section.advantages .content .advantages__reason{
    height: 250px;
    flex-basis: 250px;
  }

  section.tabs .tabs__content .content article .text p.subtitle,
  section.title .main-layout .title__row p.title__subtitle {
    font-size: var(--font-size-12);
    line-height: 16px;
    font-weight: 10;
  }

  section.advantages .content .advantages__reason p.subtitle.reason{
    font-size: var(--font-size-10);
    font-weight: 10;
    line-height: 14px;
  }

  #main {
    width: 770px;
    margin-top: 56px;
  }

  .main-layout {
    width: 770px;
    margin: auto;
  }

  .step img{
    height: 92px;
  }

  section.instructions .instruction__steps__row{
    gap: 10px;
    flex-wrap: wrap;
  }

  section.instructions .instruction__steps__row .step{
    flex-basis: 380px;
  }

  .instruction__steps__row .step .step-text p.step__subtitle{
    line-height: 20px;
    font-weight: 10;
    letter-spacing: 0.25px;
    font-size: var(--font-size-14);
    height: 43px;
  }

  h5.title {
    font-size: var(--font-size-24);
    line-height: 32px;
    font-weight: 100;
  }

  h1.title__header {
    font-size: var(--font-size-36);
    font-weight: 10;
    line-height: 44px;
    text-align: left;
  }

  h3.title{
    font-size: var(--font-size-14);
    font-weight: 100;
    line-height: 20px;
    letter-spacing: 0.1px;
  }

  section.tabs .tabs__content .content article {
    height: 260px;
  }

  section.tabs .tabs__content .content article,
  section.tabs>.tabs__choose, 
  section.tabs>.tabs__content, 
  section.vendors, 
  section.instructions, 
  section.advantages, 
  section.faq,  
  section.title>.main-layout>.title__row {
    margin-bottom: 56px;
    padding-bottom: 0;
  }

  section.title>.main-layout>.title__row{
    gap: 67px;
  }

  .content article.first video,
  .content article.second .left,
  .content article.second .right,
  .content article.third video {
    width: 50%;
    object-fit: cover;
  }

  footer{
    min-width: 720px;
  }

  footer .desktop{
    width: 770px;
  }

  footer .desktop .footer__bg-image{
    background-image: url('../images/footer/footer-tablet.svg');    
    height: 511px;
  }

  .social{
    position: absolute;
    bottom: 0;
  }

  .social__links{
    margin: 0;
    position: relative;
    top: 21px;
    left: 534px;
  }

  .under-background{
    position: relative;
    margin-left: 55px;
    margin-top: 11px;
    top: 103px;
    justify-content: flex-start;
  }

  .nav-links{
    position: relative;
    top: 420px;
    width: 720px;
  }

  .tabs__navs{
    width: 770px;
  }

  .lowest-row {
    margin-top: 154px;
    margin-left: 70px;
    flex-direction: column;
    align-items: flex-start;
  }

  .lowest-row .logos, .lowest-row .copyright {
    margin-left: 0;
  }

  .copyright{
    margin-top: 12px;
  }

  button.burger {
    background: transparent;
    border: none;
    width: 48px;
    height: 48px;
    background-image: url(../images/icons/burger.svg);
    display: block;
  }

  nav {
    justify-content: left;
    padding: 8px 0 8px 5px;
    margin: 0;
  }

  .burger-menu.hidden{
    display: none;
  }

  .burger-menu{
    position: absolute;
    left: 0;
    top: 54px;
    width: 100vw;
    height: fit-content;
    z-index: 99;
    background: black;

    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

}

/* 
  Queries for mobile devices (width < 905px)
 */


@media screen and (width < 905px) {
  footer .desktop .footer__bg-image{
    background-image: none;
  }

  section.faq img.faq-pic-desk{
    display: none;
  }

  .fixed{
    width: 100%;
    position: fixed;
    bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999;
  }

  .fixed .registration{
    height: 56px;
  }

  section.faq img.faq-pic-mob{
    display: block;
    margin: 0 auto;
    max-width: 100%;
  }

  section.title, 
  section.tabs>.tabs__choose,
  section.tabs>.tabs__content,
  section.vendors,
  section.instructions,
  section.advantages,
  section.faq
  {
    padding: 0 16px;
  }

  section.instructions .instruction__steps__row{
    flex-direction: column;
  }

  section.title .main-layout .title__row{
    flex-direction: column;
    gap: 30px;
  }

  .content-title{
    margin-top: 32px;
  }   

  h1.title__header{
    font-size: var(--font-size-22);
    font-weight: 100;
    line-height: 28px;
  }

  h5.title {
    font-size: 22px;
    line-height: 28px;
    font-weight: 100;
  }

  section.title .main-layout .title__row p.title__subtitle{
    max-width: 100vw;
    min-width: 280px;
    margin-bottom: 32px;
  }

  .tabs__title h2.tabs__title-role{
    font-size: var(--font-size-22);
  }

  section.tabs .tabs__choose {
    margin-bottom: 0;
  }

  section.advantages .content .advantages__reason, section.tabs .tabs__content .content article{
    flex-direction: column;
    height: fit-content;
  }

  section.tabs .tabs__content .content article .text{
    margin: 16px;
  }

  section.tabs .tabs__content .content .second .left{
    margin: 0;
  }

  section.tabs .tabs__content .content article.second .left{
    order: 2;
  }

  article.second .right{
    width: 100%;
  }

  section.tabs .tabs__content .content article .text p.subtitle{
    font-size: var(--font-size-14);
    font-weight: 10;
    line-height: 20px;
    letter-spacing: 0.25px;
  }
  .right video{
    height: 155px;
  } 

  .right, .right .text {
    padding: 22px 22px 22px 0px;
  }

  .right .text{
    margin: 22px 0 22px 22px;
  }

  section.tabs .tabs__content .content article {
    margin-bottom: 30px;
  }


  article.second .right .text p.description,
  article.second .right .text .courses-info{
    color: var(--color-neutral-n-80);
    font-size: var(--font-size-12);
  }

  article.second .right{
    border-radius: 4px;
    align-items: flex-start;
    justify-content: flex-start;
  }

  article.second .right .text .description {
    margin: 15px 0;
  }

  section.advantages .content{
    display: flex;
    flex-direction: column;
    gap: 30px;
  }

  /* footer */

  footer .desktop{
    display: none;
  }


  /*  mobile footer */

  footer{
    width: fit-content;
    /* width: 100vw; */
    min-width: 0;
    max-width: 100vw;
    /* margin-left: 0; */
    margin-top: 126px;
    padding-bottom: 130px;
  }

  /* footer .mobile{
    margin-bottom: 25px;
  } */
  
  footer .mobile .footer__bg-image{
    background-image: url(../images/footer/footer-mobile.svg);
    background-position: left;
    background-repeat: no-repeat;
    height: 705px;
    display: flex;
    flex-direction: column;

  }
  
  footer footer__bg-image .invite{
    width: 380px;
    height: 705px;
    display: flex;
  }
  
  .invite__title{
    padding-bottom: 9px;
  }
  
  .invite{
    margin-left: 60px;
    margin-right: 47px;
    width: 246px;
  }
  
  .invite__form{
    width: 210px;
    /* margin-left: 47px; */
  }
  
  /* или #invite__form__phone */
  .invite__form>.phone>input{
    background-color: transparent;
    border: none;
    outline: none;
    width: 100%;
    color:var(--color-neutral-n-100);
  }
  
  div.phone{
    display: flex;
    margin-top: 0;
    margin-bottom: 12px;
    background-color: var(--color-neutral-n-20);
    color: var(--color-neutral-n-80);
    font-size: var(--font-size-16);
    /* font-weight: 400; */
    line-height: 24px;
    width: 236px;
  }
  
  .invite__form>.phone{
    border-bottom: 1px solid var(--color-neutral-n-80);
  }
  
  .social__links{
    margin: 570px 0 0 70px;
  }

  
  .nav-links{
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    align-items: stretch;

    margin-top: 25px;
    margin-left: 26px;
    width: 341px;
    position: relative;
    
  }
  
  .nav-links__row {
    display: flex;
    flex-wrap: wrap;

    justify-content: flex-start;
    align-items: stretch;
  }
  
  .nav-link{
    padding: 10px 12px;
    width: max-content;
    font-size: var(--font-size-14);
    /* font-weight: 600; */
    line-height: 20px;
    color: var(--color-secondary-s-80);
  }
  
  .links{
    gap: 19px;
    display: flex;
  }
  
  .smm__title{
    font-weight: 100;
    color: #81838E;
    font-size: var(--font-size-16);
    line-height: 24px;
    letter-spacing: 0.15px;
    min-width: 270px;
    margin-top: 22px;
  }

  .mobile .lowest-row{
    display: flex;
    align-items: flex-start;
    flex-direction: column;
    margin-left: 26px;
  }
  
  .mobile .lowest-row .copyright{
    width: 321px;
    margin-left: 0px;
  }
  
  .mobile .lowest-row .logos{
    margin-left: 0px;
  }

  /* 
    mobile header
  */

  header>nav>a.registration,
  header>nav>.nav__anchors{
    display: none;
  }

  nav{
    justify-content: left;
    padding: 8px 0 8px 5px;
    margin: 0;
  }
  
  button.burger{
    background: transparent;
    border: none;
    width: 48px;
    height: 48px;
    background-image: url(../images/icons/burger.svg);
    display: block;
    
  }

  .burger-menu.hidden{
    display: none;
  }

  .burger-menu{
    position: absolute;
    left: 0;
    top: 54px;
    max-height: 233px;
    width: 100vw;
    height: fit-content;
    z-index: 99;
    background: black;

    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  h1.title__header{
    padding-top: 40px;
  }

  section.main-image{
    max-height: 233px;
  }

  section.main-image video{
    max-height: 233px;
  }

  .mobile{
    display: block;
    margin: auto;
    width: 380px;
  }

  .tabs__content{
    width: 100%;
  }

  section.title>.main-layout>.title__row{
    margin-bottom: 0;
    align-items: start;
  }
  

  #main {
    margin-top: 0;
    width: 100%;
  }
  .main-layout {
    width: 100%;
  }
  .tabs__navs{
    width: calc(100% - 32px);
  }

 }

.hidden{
  display: none;
}

.instruction{
  display: none;
}

.shown{
  display: block;
}

@media screen and (width > 1600px) {
  article video, 
  article.second .right,
  article.second .right video {
    width: 560px
  }

  article .text,
  article.second .left {
    width: 600px
  }
}