@media only screen and (max-width: 1250px) {
  body {
    font-size: 14px;
  }
  h1 {
    font-size: 32px;
    line-height: 40px;
  }
  h2 {
    font-size: 28px;
    line-height: 32px;
  }
  h3 {
    font-size: 22px;
    line-height: 32px;
  }
  .body2 {
    font-size: 20px;
    line-height: 30px;
  }
  .container {
    width: calc(100% - 20px);
    padding: 0 10px;
  }
  #navButtonBuy {
    padding: 5px 0px;
    font-size: 0px;
  }
  #navButtonBuy.expanded {
    padding: 5px 10px;
    font-size: 14px;
  }
  #promo .promo-info {
    width: 50%;
    padding: 30px;
  }
  #speakerFeed {
      grid-template-columns: repeat(3, auto);
  }
  .we {
    display: flex;
    justify-content: center;
    gap: 80px;
  }
}
@media only screen and (max-width: 900px) {
  main {
    margin-top: 40px;
  }
  .text-block {
    margin-bottom: 40px;
  }
  #speakerFeed {
    grid-template-columns: repeat(2, auto);
    justify-content: center;
  }
  nav {
    position: fixed;
    width: 100%;
    height: 50px;
  }
  #home {
    height: 100vh;
  }
  nav #logo img {
    height: 20px;
  }
  .link-list {
    display: none;
  }
  .burger {
    display: block;
  }
  #burgerBtn {
    height: 25px;
    width: 25px;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    cursor: pointer;
    display: flex;
  }
  .burger-line {
    height: 2px;
    background-color: #f4f4f4;
    transition: transform .2s cubic-bezier(.68,-0.55,.27,1.55);
  }
  #burgerBtn:hover .burger-line {
    background-color: #fdc612;
  }
  #burgerBtn.active div:nth-child(1) {
    transform: translateY(400%) rotateZ(45deg);
  }
  #burgerBtn.active div:nth-child(2) {
    transform: rotateY(90deg);
  }
  #burgerBtn.active div:nth-child(3) {
    transform: translateY(-400%) rotateZ(-45deg);
  }
  #navButtonBuy {
    padding: 5px 0px;
    font-size: 0px;
  }
  #navButtonBuy.expanded {
    padding: 5px 10px;
    font-size: 14px;
  }
  .hidden-img {
    overflow: clip;
    display: block;
    flex-direction: column;
    transition: height 0.5s linear;
  }
  .hidden-img img {
    max-width: auto;
    width: 100%;
    margin: 0 auto;
  }
  .partner img, .organizer a>img, .general a>img {
    display: flex;
    height: 50px;
    filter: grayscale(100%);
  }
  .logo img {
    height: 35px;
  }
  .logo {
    font-size: 12px;
    line-height: 1rem;
  }
}
@media only screen and (max-width: 872px) {
  .forum23-info > div:nth-child(1) {
    width: 100%;
    padding: 12px;
  }
  .forum23-info > div:nth-child(2) {
    width: 100%;
    padding: 12px;
  }
  .we {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  #partnerList {
    justify-content: center;
    gap: 30px;
  }
}
@media only screen and (max-width: 750px) {
  .buy-items {
    flex-direction: column;
  }
  #partnerList {
    flex-direction: column;
    align-items: center;
    gap: 30px;
  }
}
@media only screen and (max-width: 650px) {
  footer .content>div:first-child {
    display: flex;
    flex-direction: column;
    width: auto;
    row-gap: 20px;
  }
  .president-cite {
    padding: 5px;
  }
  #promo {
    display: none;
  }
  .why-text {
    display: flex;
    flex-direction: column;
    align-items: start;
  }
  .text1, .text2 {
    width: 100%;
  }
}
@media only screen and (max-width: 580px) {
  html, body {
    overflow-x: clip;
  }
  #speakerFeed {
    grid-template-columns: repeat(1, auto);
  }
  #forum23 {
    margin-bottom: 30px;
  }
  .forum23-info {
    right: auto;
  }
  .forum23-info > div:nth-child(2) {
    display: none;
  }
  .forum23-description.mobile {
    display: block;
  }
  .forum23-title div {
    display: flex;
    flex-direction: column;
    align-items: center;
    row-gap: 20px;
  }
  .we {
    flex-direction: column;
    gap: 50px;
  }
  .review-item {
    display: flex;
    align-items: center;
    padding: 5px;
    background-color: #FBF6EA;
    flex-direction: column;
  }
  .review-left {
    width: auto;
    padding-left: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  .review-center {
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  .review-devider {
    width: 100%;
    height: 2px;
    background-color: #00000050;
    display: block;
    margin: 0 auto;
  }
  .review-right {
    width: 100%;
    padding: 0 5px;
  }
  .president-cite {
    display: flex;
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px 5px;
    column-gap: 50px;
    align-items: center;
    flex-direction: column;
  }
  .buy-items {
    display: flex;
    flex-direction: column;
  }
  .review-arrows {
    margin: 5px;
    text-align: center;
  }
  .buy-item {
    width: 100%;
  }
  .buy-item:nth-child(3) {
    display: block;
    height: 100%;
  }
  footer .content {
    flex-direction: column;
    align-items: center;
    text-align: center;
    row-gap: 30px;
  }
  .contacts {
    align-items: center;
    display: flex;
    flex-direction: column;
    text-align: center;
  }
  footer .content > div:first-child {
    display: flex;
    flex-direction: column;
    width: auto;
    row-gap: 20px;
    justify-content: start;
  }
}
@media only screen and (max-width: 377px) {
  .nav-right {
    column-gap: 9px;
  }
  #navButtonBuy.expanded {
    padding: 2px 6px;
    font-size: 12px;
  }
  .info {
    margin-top: 50px;
  }
  .info > :nth-child(2) {
    flex-wrap: wrap;
    text-wrap: nowrap;
  }
}