.header {
  margin: 0 auto;
  height: 100vh;
}
.header__navigation {
  padding: 40px 0 40px;
}
@media screen and (max-width: 780px) {
  .header__navigation {
    display: none;
  }
}
.header__navigation-list {
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 50px;
}
@media screen and (max-width: 1080px) {
  .header__navigation-list {
    gap: 30px;
  }
}
.header__navigation-item {
  font-size: 18px;
  color: white;
}
@media screen and (max-width: 1080px) {
  .header__navigation-item {
    font-size: 15px;
  }
}

.main-navigation:hover {
  background-color: white;
  width: 110px;
  height: 110px;
  backdrop-filter: blur(100px);
  border-radius: 50%;
}

.header__title {
  /* margin: 0 auto; */
  padding: 70px 0;
  font-size: 50px;
  background-image: linear-gradient(#D81696, #77359A, #4995BC);
  text-align: center;
}
@media screen and (max-width: 780px) {
  .header__title {
    font-size: 42px;
    padding: 80px 50px;
  }
}
@media screen and (max-width: 480px) {
  .header__title {
    font-size: 30px;
    padding: 60px 40px;
  }
}
.crm-img {
  display: block;
  margin: 0 auto;
  width: 400px;
  height: 400px;
}
@media screen and (max-width: 780px) {
.crm-img {
    width: 300px; 
    height: 300px; 
  }
}
@media screen and (max-width: 480px) {
.crm-img {
    width: 200px; 
    height: 200px;
  }
}
.header__description {
  max-width: 688px;
  margin: 0 auto;
  padding: 10px 0;
  font-size: 30px;
  text-align: center;
}
@media screen and (max-width: 780px) {
  .header__description {
    font-size: 26px;
    padding: 10px 50px;
  }
}
@media screen and (max-width: 480px) {
  .header__description {
    font-size: 18px;
    padding: 20px 10px;
  }
}


  /* Бургер-меню - мобильная версия */
  .burger-btn {
      display: none;
      position: fixed;
      top: 30px;
      right: 30px;
      width: 40px;
      height: 30px;
      flex-direction: column;
      justify-content: space-between;
      cursor: pointer;
      z-index: 1001;
      background: transparent;
      border: none;
  }
  
  .burger-line {
      width: 100%;
      height: 4px;
      background: white;
      transition: all 0.3s;
  }
  
  .mobile-nav {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.2);
      -webkit-backdrop-filter: blur(10px);
      backdrop-filter: blur(10px);
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      z-index: 1000;
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s;
  }
  
  .mobile-nav.active {
      opacity: 1;
      visibility: visible;
  }
  
  .mobile-nav-list {
      list-style: none;
      text-align: center;
  }
  
  .mobile-nav-item {
      margin: 25px 0;
      transform: translateY(20px);
      opacity: 0;
      transition: all 0.3s;
  }
  
  .mobile-nav.active .mobile-nav-item {
      transform: translateY(0);
      opacity: 1;
  }
  
  .mobile-nav-item a {
      color: white;
      text-decoration: none;
      font-size: 24px;
      transition: color 0.3s;
      padding: 10px 20px;
      display: inline-block;
  }
  
  .mobile-nav-item a:hover {
      color: #D81696;
  }
  
  /* Анимация бургера */
  .burger-btn.active .burger-line:nth-child(1) {
      transform: translateY(13px) rotate(45deg);
  }
  
  .burger-btn.active .burger-line:nth-child(2) {
      opacity: 0;
  }
  
  .burger-btn.active .burger-line:nth-child(3) {
      transform: translateY(-13px) rotate(-45deg);
  }
  
  /* Медиазапросы */
  @media (max-width: 780px) {
      /* .header__navigation {
          display: none;
      } */
      
      .burger-btn {
          display: flex;
      }
      
      /* Задержка для анимации пунктов меню */
      .mobile-nav-item:nth-child(1) { transition-delay: 0.1s; }
      .mobile-nav-item:nth-child(2) { transition-delay: 0.2s; }
      .mobile-nav-item:nth-child(3) { transition-delay: 0.3s; }
      .mobile-nav-item:nth-child(4) { transition-delay: 0.4s; }
      .mobile-nav-item:nth-child(5) { transition-delay: 0.5s; }
      
  }
  
  @media (max-width: 480px) {
    .burger-btn {
        top: 20px;
        right: 20px;
        width: 35px;
        height: 25px;
    }

    .mobile-nav-item a {
        font-size: 20px;
    }
  }

.main:before {
  background: url(../img/logo-300.svg);
  background-repeat: no-repeat;
  background-position: center;
  background-size: 60%;
  content: '';
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  position: fixed;
  z-index: -1;
}


@media screen and (max-width: 1400px) {
  .main:before {
    background-size: 75%;
  }
}
@media screen and (max-width: 1080px) {
  .main:before {
    background-size: 90%;
  }
}
@media screen and (max-width: 780px) {
  .main:before {
    background-size: 110%;
  }
}
@media screen and (max-width: 480px) {
  .main:before {
    background-size: 110%;
  }
}

/* POSSIBILITY */
.section__possibility {
  margin: 0 auto;
  padding-top: 50px;
  padding-bottom: 100px;
  background-color: black;
}
@media screen and (max-width: 480px) {
  .section__possibility {
    padding-bottom: 50px;
  }
}
.section__possibility-title {
  margin: 0 auto 70px;
  font-size: 20px;
  color: #D81696;
  text-align: center;
}
.possibility__project-description_title {
  margin: 0 auto 100px;
  padding: 0 20px;
  font-size: 30px;
  font-weight: 600;
  text-align: center;
}
@media screen and (max-width: 780px) {
  .possibility__project-description_title {
      font-size: 25px;
  }
}
@media screen and (max-width: 480px) {
  .possibility__project-description_title {
  font-size: 20px;
  }
}
.section__possibility-description {
  margin: 0 auto 130px;
  width: 1000px;
  padding: 20px 147px;
  background-image: linear-gradient(90deg, #D81696, #77359A);
  font-size: 19px;
  font-weight: 400;
  text-align: center;
  border-radius: 300px;
}
@media screen and (max-width: 1080px) {
  .section__possibility-description {
    width: 700px;
    padding: 20px 30px;  
  }
}
@media screen and (max-width: 780px) {
  .section__possibility-description {
    width: 400px;
    border-radius: 50px;
  }
}
@media screen and (max-width: 480px) {
  .section__possibility-description {
    width: 280px;
    border-radius: 40px;
  }
}
.possibility__project-parent {
  margin: 0 auto;
  color: white;
  font-size: 15px;
  display: flex;
  justify-content: center;
  gap: 20px;
  align-items: center;
}

@media screen and (max-width: 1400px) {
  .possibility__project-parent {
    flex-wrap: wrap;
    padding: 0 20px;
  }
}
@media screen and (max-width: 1180px) {
  .possibility__project-parent {
    max-width: 700px;
    padding: 10px;
  }
}
@media screen and (max-width: 560px) {
  .possibility__project-parent {
    max-width: 550px;
    height: auto;
  }
}
.possibility__project-div1 {
  background-image: linear-gradient(-135deg, #4995BC, #FF67CB);  
  padding: 30px 20px;
  width: 250px;
  height: 450px;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 20px;
}
.possibility__project-div1:hover {
  border: 2px solid white;
  color: #000;
}
@media screen and (max-width: 540px) {
  .possibility__project-div1 {
    height: auto;
  }
}
.possibility__project-div2 {
  background-image: linear-gradient(45deg, #4995BC, #FF67CB);  
  width: 250px;
  height: 450px;
  padding: 30px 20px;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 20px;
}
.possibility__project-div2:hover {
  border: 2px solid white;
  color: #000;
}
@media screen and (max-width: 540px) {
  .possibility__project-div2 {
    height: auto;
  }
}
.possibility__project-div3 {
  background-image: linear-gradient(-135deg, #4995BC, #FF67CB);  
  width: 250px;
  height: 450px;
  padding: 30px 20px;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 20px;
}
.possibility__project-div3:hover {
  border: 2px solid white;
  color: #000;
}
@media screen and (max-width: 540px) {
  .possibility__project-div3 {
    height: auto;
  }
}
.possibility__project-div4 {
  background-image: linear-gradient(45deg, #4995BC, #FF67CB);  
  width: 250px;
  height: 450px;
  padding: 30px 20px;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 20px;
}
.possibility__project-div4:hover {
  border: 2px solid white;
  color: #000;
}
@media screen and (max-width: 540px) {
  .possibility__project-div4 {
    height: auto;
  }
}

/* CRM ADVANTAGES */


.section__crm-advantages {
  margin-bottom: 150px;
}
.section__crm-advantages__title{
  margin: 50px auto 100px;
  font-size: 30px;
  font-weight: 600;
  text-align: center;
}
@media screen and (max-width: 560px) {
  .section__crm-advantages__title {
    font-size: 20px;
  }
}
.crm-advantages__flex {
  margin: 0 auto;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  align-items: center;
  max-width: 1100px;
  gap: 50px;
}
@media screen and (max-width: 1080px) {
  .crm-advantages__flex {
  gap: 0; 
 }
}
@media screen and (max-width: 560px) {
  .crm-advantages__flex {
  padding: 0 10px; 
 }
}

.crm-advantages__wrapper {
  margin: 0 auto 20px;
  max-width: 500px;
  height: 160px;
  padding: 10px 0 0;
  color: white;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(5px);
  border: 2px solid transparent;
  border-image: linear-gradient(to right, #D81696 0%, #4995BC 100%);
  border-image-slice: 2;
  text-align: center;
  font-size: 18px;
}
@media screen and (max-width: 1080px) {
  .crm-advantages__wrapper {
  height: auto;
  }
}
@media screen and (max-width: 1000px) {
  .crm-advantages__wrapper {
  font-size: 16px;
  gap: 5px;
  }
}
@media screen and (max-width: 560px) {
  .crm-advantages__wrapper {
  font-size: 14px;
  }
}
.advantages__wrapper-title {
  margin-bottom: 20px;
  font-size: 20px;
}
@media screen and (max-width: 560px) {
  .advantages__wrapper-title {
    margin-bottom: 10px;
    font-size: 15px;
  }
}
.advantages__wrapper-description {
  border-radius: 0px 0px 20px 20px;
  padding: 5px  10px 10px;
}


/* AIMS */

.section__aims {
  margin: 0 auto 120px;
  background-color: black;
}
.aims__wrapper {
  margin: 0 auto;
}
.aims__wrapper-list {
  display: flex;
  justify-content: center;
  align-items: center;
  padding-top: 20px;
  line-height: 20px;
  text-align: center;
  flex-wrap: wrap;
  margin: 0 auto;
}
@media screen and (max-width: 1080px) {
  .aims__wrapper-list {
    gap: 20px;
  }
}
@media screen and (max-width: 780px) {
  .aims__wrapper-list {
  flex-direction: column;
  max-width: 400px;  
  }
}
@media screen and (max-width: 480px) {
  .aims__wrapper-list {
  flex-direction: column;
  max-width: 250px;  
  }
}
.aims__wrapper-item {
  max-width: 400px;
  border-right: 2px solid #D81696;
  padding: 30px;
  align-self: flex-start;
}
.aims__wrapper-item:last-child {
  border-right: none;
}
@media screen and (max-width: 1400px) {
  .aims__wrapper-item {
    max-width: 300px;
    padding: 20px;
  }
}
@media screen and (max-width: 1080px) {
  .aims__wrapper-item {
    max-width: 200px;
    font-size: 10px;
    padding: 10px;
  }
}
@media screen and (max-width: 780px) {
  .aims__wrapper-item {
    max-width: 400px;
    border-right: none;
    height: 250px;
    border-bottom: 2px solid #D81696;;
  }
}
@media screen and (max-width: 780px) {
.aims__wrapper-item:last-child {
    border-bottom: none
  }
}
.wrapper-item__icon {
  width: 100px;
  padding-bottom: 30px;
}
@media screen and (max-width: 480px) {
.wrapper-item__icon {
  padding-bottom: 0;
  }
}
.wrapper-item__title {
  padding-bottom: 20px;
  font-size: 18px;
  font-weight: 600;
}
@media screen and (max-width: 1080px) {
.wrapper-item__title {
  padding-bottom: 16px;
  font-size: 16px;
  }
}
@media screen and (max-width: 780px) {
.wrapper-item__title {
    font-size: 18px;
  }
}
.wrapper-item__description {
  font-size: 14px;
  font-weight: 300;
}

.reestr-po {
  width: 600px;
  padding: 20px;
  margin: 40px auto;
  background-color: #FF57D5;
  border-radius: 100px;
}

@media screen and (max-width: 600px) {
  .reestr-po {
    width: 95%;
  }
}

.po-reestr {
  color: #000;
  font-size: 18px;
  text-align: center;
  font-weight: 600;
  display: block;
}
.reestr-po:hover {
  border: 1px solid white;
}

@media screen and (max-width: 780px) {
  .po-reestr {
    font-size: 16px;
  }
}
@media screen and (max-width: 480px) {
  .po-reestr {
    font-size: 14px;
  }
}



/* ИНСТРУКЦИИ */

.section__technical {
  margin: 0 auto;
  color: #000;
}
@media screen and (max-width: 1280px) {
.section__technical {
  padding: 0 20px;
  }
}
.functional-requares {
  max-width: 1200px;
  margin: 0 auto 30px;
  padding: 30px 50px;
  background-image: linear-gradient(45deg, #ffc0cb, #FFA6F3);
  text-align: center;
  border-radius: 20px;
}
@media screen and (max-width: 480px) {
  .functional-requares {
  padding: 15px 20px;
  }
}
.functional-requares__title {
  font-size: 20px;
  font-weight: bold;
  text-align: center;
  margin-bottom: 30px;
}
@media screen and (max-width: 780px) {
.functional-requares__title {
    font-size: 18px;
  }
}
@media screen and (max-width: 480px) {
.functional-requares__title {
    font-size: 16px;
  }
}
.functional-requares__decription {
  max-width: 800px;
  margin: 0 auto;
  font-size: 18px;
  font-weight: bold;
  text-align: center;
}
@media screen and (max-width: 780px) {
.functional-requares__decription {
  font-size: 18px;
  }
}
@media screen and (max-width: 480px) {
  .functional-requares__decription {
  font-size: 14px;
  }
}
.functional-requares__elements {
  margin: 0 auto;
  display: flex;
  justify-content: center;
  gap: 90px;
  padding: 30px;
}
@media screen and (max-width: 780px) {
  .functional-requares__elements {
    gap: 20px;
  }
}
@media screen and (max-width: 480px) {
  .functional-requares__elements {
    gap: 5px;
    flex-wrap: wrap;
    padding: 10px;
  }
}
.technical-requares {
  max-width: 1200px;
  margin: 0 auto 30px;
  padding: 30px 50px;
  background-image: linear-gradient(-45deg, #5de7ff, #FFA6F3);
  text-align: center;
  border-radius: 20px;
}
@media screen and (max-width: 1280px) {
  .technical-requares {
  padding: 20px 40px;
  }
}
@media screen and (max-width: 1080px) {
  .technical-requares {
  padding: 20px 30px;
  }
}
@media screen and (max-width: 780px) {
  .technical-requares {
  padding: 15px 20px;
  }
}
.technical-requares__title {
  font-size: 20px;
  font-weight: bold;
  text-align: center;
  margin-bottom: 30px;
}
@media screen and (max-width: 780px) {
.technical-requares__title {
  font-size: 16px;
  }
}
.technical-requares__wrapper {
  display: flex;
  justify-content: space-between;
}
@media screen and (max-width: 1280px) {
.technical-requares__wrapper {
  justify-content: space-around;
  gap: 20px;
  }
}
@media screen and (max-width: 1080px) {
.technical-requares__wrapper {
  justify-content: space-around;
  gap: 40px;
  flex-wrap: wrap;
  }
}
.technical-requares__operation-systems { 
  display: flex;
}
@media screen and (max-width: 480px) {
.technical-requares__operation-systems { 
    flex-direction: column;
    align-items: anchor-center;
  }
}

.operation-system-img {
  width: 150px;
  height: 150px;
}
@media screen and (max-width: 1280px) {
.operation-system-img {
    width: 120px;
    height: 120px;
  }
}
@media screen and (max-width: 780px) {
.operation-system-img {
    width: 100px;
    height: 100px;
    align-self: flex-end;
  }
}
@media screen and (max-width: 480px) {
.operation-system-img {
    width: 60px;
    height: 60px;
    align-self: center;
        margin-bottom: 10px;

  }
}
.system-wrap {
  display: flex;
  justify-content: stretch;
  align-items: center;
  flex-wrap: wrap;
  max-width: 350px;
}
@media screen and (max-width: 1280px) {
.system-wrap {
    max-width: 250px;
  }
}
@media screen and (max-width: 480px) {
.system-wrap {
    max-width: 220px;
    gap: 20px;
  }
}
.operation-system {
  width: 330px;
  margin: 0 auto;
}
@media screen and (max-width: 480px) {
.operation-system {
  font-size: 14px;
  }
}
.system-elements__list {
  display: flex;
  width: 300px;
  align-items: center;
  justify-content: space-around;
  margin: 0 auto;
}
.system-elements__item {
  font-size: 12px;
}
.technical-requares__browsers {
  display: flex;
}
@media screen and (max-width: 480px) {
  .technical-requares__browsers {
    flex-direction: column;
    align-items: anchor-center;
  }
}
.technical-requares__img {
  width: 150px;
  height: 150px;
}
@media screen and (max-width: 1280px) {
.technical-requares__img {
    width: 120px;
    height: 120px;
  }
}
@media screen and (max-width: 780px) {
.technical-requares__img {
    width: 100px;
    height: 100px;
    align-self: flex-end;
    margin-bottom: 10px;
  }
}
@media screen and (max-width: 480px) {
.technical-requares__img {
    width: 60px;
    height: 60px;
    align-self: center;
  }
}
.browser-wrap {
  display: flex;
  justify-content: stretch;
  align-items: center;
  flex-wrap: wrap;
  max-width: 350px;
}
@media screen and (max-width: 1280px) {
.browser-wrap {
    max-width: 250px;
  }
}
@media screen and (max-width: 480px) {
.browser-wrap {
    max-width: 230px;
    gap: 20px;
  }
}
.working-browsers {
  width: 330px;
  margin: 0 auto;
}
@media screen and (max-width: 1080px) {
.working-browsers {
    max-width: 250px;
    font-size: 14px;
  }
}
.browsers-elements__list {
  display: flex;
  width: 300px;
  align-items: center;
  justify-content: space-around;
  margin: 0 auto;
}
.browsers-elements__item {
  font-size: 12px;
}
.technical-requares__images {
  max-width: 320px;
}
.images__img {
  width: 150px;
  padding-bottom: 20px;
}
.image__description {
  width: 310px;
  font-size: 14px;
}
.instruction-steps {
  max-width: 1200px;
  margin: 0 auto 30px;
  padding: 30px 50px;
  background-image: linear-gradient(-375deg, #ff67cb, #b3f6ff);
  border-radius: 20px;
}
.instruction-steps__title {
  font-size: 20px;
  font-weight: bold;
  text-align: center;
  margin-bottom: 20px;
}
@media screen and (max-width: 780px) {
.instruction-steps__title {
  font-size: 16px;
  }
}
.rules__downloading {
  font-size: 16px;
  font-weight: 400;
  text-align: center;
  margin-bottom: 15px;
}
.read-documents {
  display: block;
  margin: 0 auto 30px;
  padding: 20px 40px;
  background-image: linear-gradient(90deg, #00B9ED, #FFA6F3);
  border-radius: 10px;
  font-size: 20px;
}
@media screen and (max-width: 480px) {
.read-documents {
  font-size: 14px;
  padding: 10px 20px;
  }
}

 /* 
.downloading__html {
  padding: 8px 30px;
  background-color: #000;
  border-radius: 15px;
  color: white;
  font-size: 12px;
  font-weight: 600;
  align-content: center;
  margin-right: 20px;
  margin-bottom: 10px;
}
.downloading__html__small-description {
  color: #636363;
  font-size: 14px;
}
.instruction-zip {
  font-size: 14px;
  font-weight: 600;
  padding-bottom: 30px;
}
.instruction-zip__description {
  font-size: 14px;
  font-weight: 600;
  padding-bottom: 10px;
}
.instruction-zip__rearchive {
  font-size: 14px;
  font-weight: 400;
  padding-bottom: 10px;
}
.instruction-zip__example {
  font-size: 14px;
  font-weight: 500;
  padding-bottom: 10px;
  color: #636363;
}
.instruction-zip__example-btn {
  color: white;
  font-weight: 600;
  background-color: #000;
  border-radius: 10px;
  padding: 5px 8px;
  align-content: center;
}
.start-on-server {
  font-size: 14px;
  font-weight: 600;
  padding-bottom: 10px;
}
.open-html-file {
  font-size: 14px;
  font-weight: 400;
  padding-bottom: 10px;
}
.open-html-file::before {
  content: url(../img/icons8-html-файл-50.png);
  margin-right: 0.4em;
}
.start-with-no-server {
  font-size: 14px;
  font-weight: 600;
  padding-bottom: 10px;
}
.start-in-any-browser {
  font-size: 14px;
  font-weight: 400;
  padding-bottom: 10px;
}
.fisrt-step-btn {
  color: white;
  font-size: 15px;
  background-color: #000;
  border-radius: 100%;
  padding: 5px 10px;
  margin-bottom: 10px;
}
.fisrt-step {
  display: inline-block;
  font-size: 14px;
  font-weight: normal;
}
.second-step-btn {
  color: white;
  font-size: 15px;
  background-color: #000;
  border-radius: 100%;
  padding: 5px 10px;
}
.second-step {
  display: inline-block;
  font-size: 14px;
  font-weight: normal;
}
 */

/* ДОКУМЕНТАЦИЯ */
.section__documents {
  padding-bottom: 140px;
}
@media screen and (max-width: 1080px) {
  .section__documents {
    padding: 0 40px 140px;
  }
}
.section__documents-title {
  margin: 50px auto;
  font-size: 30px;
  text-align: center;
  font-weight: 500;
}
@media screen and (max-width: 480px) {
.section__documents-title {
  font-size: 20px;
  }
}
.documents-to-download {
  display: block;
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
  color: #fff;
  background-color: #d81696;
  margin-bottom: 15px;
  border-radius: 7px;
  text-align: center;
}
.documents-to-download:hover {
  border: 2px solid white;
}


/* УЗНАТЬ СТОИМОСТЬ */
.section__price {
  margin: 0 auto;
  background-color: #000;
  padding-bottom: 60px;
}
.section__price-title {
  margin: 0 auto 50px;
  font-size: 70px;
  background-image: linear-gradient(to right, #ff7af4 0%, #5de7ff 100%);
  /* обрезаем фон по тексту */
  -webkit-background-clip: text;
  /* меняет цвет текста заголовка на прозрачный что бы можно было увидеть градиент*/
  -webkit-text-fill-color: transparent;
  text-align: center;
  font-weight: 700;
}
@media screen and (max-width: 780px) {
  .section__price-title {
    font-size: 50px;
  }
}
@media screen and (max-width: 480px) {
  .section__price-title {
    font-size: 40px;
  }
}
.price__form {
  margin: 0 auto;
}
.requiredField {
  display: block;
  margin: 0 auto 50px;
  width: 600px;
  border-bottom: 2px solid white;
  text-align: center;
  color: white;
}
@media screen and (max-width: 780px) {
  .requiredField {
    font-size: 20px;
    width: 300px;
  }
}
@media screen and (max-width: 480px) {
  .requiredField {
    font-size: 14px;
    width: 200px;
  }
}

.price__form-btn {
  display: block;
  margin: 20px auto;
  padding: 25px 95px;
  font-size: 18px;
  font-weight: 500;
  background-color: #D81696;
  border-radius: 50px;
  text-align: center;
}
@media screen and (max-width: 780px) {
  .price__form-btn {
    padding: 20px 60px;
  }
}
@media screen and (max-width: 480px) {
  .price__form-btn {
    padding: 10px 10px;
    font-size: 14px;
  }
}

#backToTopBtn {
  display: none; /* Скрываем кнопку по умолчанию */
  position: fixed;
  bottom: 50px;
  right: 50px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background-color: #000000;
  cursor: pointer;
  z-index: 99;
  transition: opacity 0.3s, background-color 0.3s;
}
#backToTopBtn:hover {
  background-color: #ffffff;
}

@media screen and (max-width: 1080px) {
  #backToTopBtn {
    width: 100px;
    height: 100px;
  }
}
@media screen and (max-width: 780px) {
  #backToTopBtn {
    width: 80px;
    height: 80px;
  }
}
@media screen and (max-width: 480px) {
  #backToTopBtn {
    width: 50px;
    height: 50px;
  }
}