html {
  box-sizing: border-box;
  height: 100%;
  scroll-behavior: smooth;
}

*,
*::before,
*::after {
  box-sizing: inherit;
  margin: 0;
}

body {
  font-family: 'Rubik', sans-serif;
}

.container {
  max-width: 1150px;
  padding-left: 25px;
  padding-right: 25px;
  margin-left: auto;
  margin-right: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0;
  padding: 0;
  padding-top: 62px;
}

.site-nav__right {
  list-style: none;
  display: flex;
}

.site-nav-link {
  text-decoration: none;
  font-family: "Rubik", sans-serif;
  font-weight: 400;
  line-height: 17px;
  letter-spacing: 1.5px;
  color: #242A45;
  margin-right: 44px;
  transition: color 0.5s ease;
}

.site-nav-link:hover {
  color: #FA5959;
}

.site-nav-link__activa {
  border: 2px solid #FA5959;
  background: #FA5959;
  box-shadow: 0px 8px 8px -4px rgba(73, 93, 207, 0.20012);
  border-radius: 5px;
  color: #fff;
  padding: 11px 32px;
  transition: background-color 0.5s ease, color 0.5s ease;
}

.site-nav-link__activa:hover {
  background-color: #fff;
  color: #FA5959;
  border: 2px solid #FA5959;

}

.hero-right__heading {
  width: 540px;
  font-family: "Rubik", sans-serif;
  font-weight: 500;
  font-size: 48px;
  line-height: 52px;
  letter-spacing: -0.15px;
  color: #242A45;
}

.hero-right__text {
  font-family: "Rubik", sans-serif;
  font-weight: normal;
  font-size: 18px;
  line-height: 28px;
  width: 540px;
  margin: 0;
  margin-top: 24px;
  margin-bottom: 32px;
  color: #242A45;
  mix-blend-mode: normal;
  opacity: 0.5;
}

.hero-right__chrome {
  text-decoration: none;
  padding: 10px 24px;
  background: #5267DF;
  box-shadow: 0px 8px 8px -4px rgba(73, 93, 207, 0.20012);
  border-radius: 5px;
  color: #fff;
  font-family: 'Rubik', sans-serif;
  font-style: normal;
  font-weight: 500;
  font-size: 14px;
  line-height: 28px;
  letter-spacing: 0.25px;
  color: #FFFFFF;
  border: 2px solid #5267DF;
  transition: all 0.5s ease;
}

.hero-right__chrome:hover {
  color: #5267DF;
  border: 2px solid #5267DF;
  background-color: #fff;
}

.hero-right__firefox {
  text-decoration: none;
  background: #F7F7F7;
  box-shadow: 0px 8px 8px -4px rgba(73, 93, 207, 0.20012);
  border-radius: 5px;
  padding: 10px 24px;
  font-family: 'Rubik', sans-serif;
  font-style: normal;
  font-weight: 500;
  font-size: 14px;
  line-height: 28px;
  letter-spacing: 0.25px;
  color: #242A45;
  opacity: 0.75;
  margin-left: 16px;
  border: 2px solid transparent;
  transition: all 0.5s ease;
}

.hero-right__firefox:hover {
  color: #242A45;
  background-color: #fff;
  border: 2px solid #242A45;
}

.site-hero {
  padding-top: 157px;
  padding-bottom: 123px;
  background: url('../img/hero-bg.png');
  background-repeat: no-repeat;
  background-position: left calc(50% + 609px) top calc(60px);
  margin-bottom: 80px;
  margin-top: 127px;
}

.features{
  padding-top: 80px;
}
.features__header{
  width: 540px;
  text-align: center;
  margin-right: auto;
  margin-left: auto;
}
.features__title{
  margin: 0;
  padding: 0;
  font-weight: 500;
  font-size: 32px;
  line-height: 52px;
  text-align: center;
  letter-spacing: -0.1px;
  margin-bottom: 16px;
}
.features__desc{
  margin: 0;
  padding: 0;
  mix-blend-mode: normal;
  opacity: 0.5;
  margin-bottom: 40px;
  width: 540px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.features-tabs{
  display: flex;
  padding: 0;
  margin: 0;
  list-style-type: none;
  width: 730px;
  align-items: center;
  margin-right: auto;
  margin-left: auto;
  border-bottom: 1px solid rgba(73, 93, 207, 0.20012);
  justify-content: space-between;
}
.features-tabs__item{
  border-bottom: 4px solid transparent;
}
.features-tabs__item--active{
  border-bottom: 4px solid #FA5959;
}

.features-tabs__item--active .features-tabs__link{
  opacity: 1;
}

.features-tabs__link{
  display: inline-block;
  font-size: 16px;
  line-height: 17px;
  letter-spacing: 0.533333px;
  color:#000;
  opacity: 0.75;
  padding: 27px 30px;
  cursor: pointer;
  text-decoration: none;
  transition: color 0.3s ease;
}

.features-tabs__link:hover{
  color: #FA5959;
}

.features__bookmark-titles{
  width: 445px;
  position: relative;
  left: 650px;
}
.features__bookmark-head{
  margin: 0;
  padding: 0;
  font-weight: 500;
  font-size: 32px;
  line-height: 52px;
  letter-spacing: -0.1px;
  margin-bottom: 16px;
}
.features__bookmark-content{
  margin: 0;
  padding: 0;
  opacity: 0.5;
  margin-bottom: 32px;
}

.panels__list {
  padding: 0;
  margin: 0;
  list-style: none;
}

.panels__item {
  display: none;
}

.panels__item--active {
  display: block;
}

.panel {
  padding-top: 70px;
  padding-bottom: 70px;
  background-image: url("../img/bg-features.png");
  background-repeat: no-repeat;
  background-position: calc(50% - 650px) bottom;
}

.panel__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.panel__img {
  flex-shrink: 0;
}

.panel__content{
  max-width: 445px;
}

.section-three {
  margin-bottom: 50px;
}

.button--blue{
  text-decoration: none;
  border: 2px solid #5267DF;
  padding: 10px 24px;
  background: #5267DF;
  box-shadow: 0px 8px 8px -4px rgba(73, 93, 207, 0.20012);
  border-radius: 5px;
  color: #fff;
  transition: all 0.5s ease;
}

.button--blue:hover{
  border: 2px solid #5267DF;
  background-color: #fff;
  color: #5267DF;
}

.download__heading{
  margin-top: 149px;
}

.extentions-section__list {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  margin-left: -36px;
  padding: 0;
  margin-top: 42px;
  padding-bottom: 50px;
  align-items: center;
  justify-content: center;
  list-style-type: none;
}

.extentions-sections__item {
  margin-bottom: -48px;
  margin-left: 36px;
  padding: 49px 22px 24px 22px;
  border-radius: 15px;
  overflow: hidden;
  width: 300px;
  background-color: #fff;
  box-shadow: 0px 10px 20px -5px rgba(73, 93, 207, 0.20012);
  background-image: url(../img/icon/card-design.svg);
  background-repeat: no-repeat;
  background-position: center 265px;
  transition: opacity 0.3s ease;
}

.extentions-sections__item:nth-child(3n + 2) {
  margin-top: 88px;
}

.extentions-sections__item:nth-child(3n + 3) {
  margin-top: 155px;
}


.extentions-sections__item:nth-child(1)::before {
  display: block;
  margin: 0 auto 32px;
  content: "";
  width: 105px;
  height: 100px;
  background-image: url("../img/chrome-logo.svg");
  background-repeat: no-repeat;
  background-position: 0 center;
}

.extentions-sections__item:nth-child(2)::before {
  display: block;
  margin: 0 auto 32px;
  content: "";
  width: 105px;
  height: 100px;
  background-image: url("../img/fire-fox.svg");
  background-repeat: no-repeat;
  background-position: 0 center;
}

.extentions-sections__item:nth-child(3)::before {
  display: block;
  margin: 0 auto 32px;
  content: "";
  width: 105px;
  height: 100px;
  background-image: url("../img/opera-logo.svg");
  background-repeat: no-repeat;
  background-position: 0 center;
}

.extentions-sections__item:hover {
  box-shadow: 0px 10px 15px -8px rgba(73, 93, 207, 0.20012);
}

.extentions-item__heading {
  margin: 0 0 6px 0;
  padding: 0;
  font-weight: 500;
  font-size: 20px;
  line-height: 24px;
  text-align: center;
  letter-spacing: 0.25px;
}

.extentions-item__content {
  margin: 0 0 60px 0;
  padding: 0;
  font-size: 15px;
  line-height: 28px;
  text-align: center;
  opacity: 0.5;
}

.extentions--button {
  display: block;
  padding: 10px 35px;
  letter-spacing: 0.25px;
  color: #fff;
  text-decoration: none;
  background-color: #495fc4;
  border-radius: 5px;
  border: 2px solid #5267DF;
  white-space: nowrap;
}

.extentions--button:hover {
  background: #FFFFFF;
  color: #5267DF;
  border: 2px solid #5267DF;
  box-sizing: border-box;
  box-shadow: 0px 8px 8px -4px rgba(73, 93, 207, 0.20012);
  border-radius: 5px;
}

.questions__heading {
  max-width: 540px;
}

.questions__list {
  max-width: 540px;
  margin: 0;
  padding: 0;
  list-style: none;
  margin-left: auto;
  margin-right: auto;
  padding-top: 56px;
}

.questions__item--wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 20px;
  position: relative;
  border-top: 2px solid rgb(226, 226, 226);
  padding-top: 20px;
}

.questions__item--title {
  font-family: 'Rubik', sans-serif;
  font-style: normal;
  font-weight: normal;
  font-size: 18px;
  line-height: 32px;
  text-align: center;
  color: #242A45;
}

.questions__item--button {
  display: block;
  width: 100%;
  height: 15px;
  background-color: transparent;
  background-image: url("../img/down-arrow.svg");
  background-repeat: no-repeat;
  background-position: right center;
  border: none;
  cursor: pointer;
  flex-grow: 1;
  position: absolute;
  margin-left: -17px;
}

.questions__item--dropdown {
  display: none;
}

.questions__item--active .questions__item--dropdown {
  display: block;
  padding-bottom: 20px;
}

.questions__item--down {
  border-bottom: 2px solid rgb(226, 226, 226);
  margin-bottom: 54px;
}

.btn {
  text-decoration: none;
  padding: 10px 24px;
  color: #fff;
  background: #5267DF;
  border: 2px solid #5267DF;
  box-shadow: 0px 8px 8px -4px rgba(73, 93, 207, 0.20012);
  border-radius: 5px;
  transition: all 0.5s ease;
}

.btn:hover {
  background-color: #fff;
  color: #5267DF;
  border: 2px solid #5267DF;
  border-radius: 5px;
}

.more-info {
  margin-top: 54px;
  margin-bottom: 150px;
  margin-left: 220px;
}

.section__down {
  background-color: rgba(82, 103, 223, 1);

}

.down-title__text {
  font-family: 'Rubik', sans-serif;
  font-weight: 500;
  font-size: 13px;
  line-height: 40px;
  text-align: center;
  letter-spacing: 5px;
  color: #FFFFFF;
  padding-top: 58px;
}

.down-title__heading {
  padding: 0;
  width: 408px;
  font-family: 'Rubik', sans-serif;
  font-weight: 500;
  font-size: 32px;
  line-height: 40px;
  text-align: center;
  letter-spacing: -0.1px;
  color: #FFFFFF;
  margin-left: auto;
  margin-right: auto;
  padding-top: 24px;
}

.section__form {
  display: flex;
  justify-content: center;
  margin-top: 36px;
  padding-bottom: 53px;
}

.email__item {
  padding: 10px 112px 10px 24px;
  font-weight: normal;
  font-size: 14px;
  line-height: 28px;
  letter-spacing: 0.25px;
  color: rgb(0, 0, 0);
  border: 2px solid transparent;
  border-radius: 5px;
}

.form__contact {
  height: 48px;
  margin-left: 16px;
  padding: 10px 24px;
  background-color: #FA5959;
  color: #fff;
  font-weight: 500;
  font-size: 14px;
  line-height: 28px;
  text-align: center;
  letter-spacing: 0.25px;
  border: none;
  transition: all 0.5s ease;
  border-radius: 5px;
  border: 2px solid #FA5959;
}

.form__contact:hover {
  border: 2px solid #FA5959;
  background-color: #fff;
  color: #FA5959;
}

.email__item:not(:placeholder-shown):not(:focus):invalid {
  background-image: url("../img/error.svg");
  background-repeat: no-repeat;
  border-color: tomato;
  background-position: right 16px center;
}

.form__span {
  display: none;
  font-family: 'Rubik', sans-serif;
  font-style: italic;
  font-weight: 500;
  font-size: 10px;
  line-height: 12px;
  letter-spacing: 0.25px;
  color: #FFFFFF;
}

input:not(:placeholder-shown):not(:focus):invalid~.form__span {
  display: flex;
  color: #fff;
  padding: 4px 128px 6px 12px;
  border: 2px solid transparent;
  background-color: #FA5959;
}

.footer {
  background-color: #242A45;
}

.footer-middle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 35px 0;
}

.footer__img {
  display: flex;
}

.footer__item {
  list-style: none;
}

.footer-icon {
  display: flex;

}

.footer__link {
  margin: 0;
  padding: 0;
  text-decoration: none;
  font-family: 'Rubik', sans-serif;
  font-weight: normal;
  font-size: 13px;
  line-height: 17px;
  letter-spacing: 1.5px;
  color: #FFFFFF;
  margin-left: 45px;
  transition: all 0.5s ease;
}

.footer__link:hover {
  color: #FA5959;
}

.contacts {
  margin-right: 0;
}

.facebook-icon {

}

.footer-icons {
  margin-right: 20px;
  background-color: #FFFFFF;

}

/* @media
  only screen and (-webkit-min-device-pixel-ratio: 2),
  only screen and (   min--moz-device-pixel-ratio: 2),
  only screen and (     -o-min-device-pixel-ratio: 2/1),
  only screen and (        min-device-pixel-ratio: 2),
  only screen and (                min-resolution: 192dpi),
  only screen and (                min-resolution: 2dppx) {
  body {
    background-image: url("https://picsum.photos/id/870/2000");
  }
} */