* {
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  margin: 0;
  font-family: "Mulish", sans-serif;
}

.main-bg {
  background: #222222;
}

header {
  max-width: 1180px;
  margin: 0 auto;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  padding: 16px 10px;
}
header h1 {
  font-size: 18px;
  color: #ffffff;
  margin-left: 17px;
}
header .logo {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}

.nav {
  width: 580px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  position: relative;
}
.nav a {
  color: #ffffff;
  text-decoration: none;
  font-size: 15px;
  cursor: pointer;
  -webkit-transition: color 0.3s ease;
  transition: color 0.3s ease;
}
.nav a:hover, .nav a:active {
  color: #ffae00;
}

.extra-link {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  color: #ffffff;
  text-decoration: none;
  font-size: 15px;
  cursor: pointer;
  -webkit-transition: color 0.8s ease;
  transition: color 0.8s ease;
}
.extra-link:hover {
  color: #ffae00;
}
.extra-link i {
  margin-left: 5px;
}
.extra-link i.active {
  -webkit-transform: rotate(180deg);
          transform: rotate(180deg);
}

.extra-dropdown {
  display: none;
}
.extra-dropdown ul {
  list-style-type: none;
  -webkit-padding-start: 0px;
          padding-inline-start: 0px;
}
.extra-dropdown ul li {
  border-bottom: 1px solid #424242;
  padding: 10px 10px;
}
.extra-dropdown ul li:hover {
  color: #ffae00;
  cursor: pointer;
}
.extra-dropdown.active {
  display: block;
  width: 200px;
  position: absolute;
  top: 45px;
  right: 0;
  z-index: 2;
  background: #222222;
  border-top: 2px solid #ffae00;
}

.about-block {
  color: #e0e0e0;
}
.about-block .about-bg {
  background-image: url("../img/Background.png");
  height: 55vh;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  position: relative;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}
.about-block .about-bg:after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
}
.about-block .about-bg .title-block {
  padding: 55px 77px;
  text-align: center;
  border-radius: 16px;
  font-size: 16px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  z-index: 1;
}
.about-block .about-bg .title-block h2 {
  text-transform: uppercase;
  color: white;
  font-size: 60px;
  font-weight: bold;
}
.about-block .about-bg .title-block div {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
      -ms-flex-direction: row;
          flex-direction: row;
  margin-top: 25px;
}
.about-block .about-bg .title-block div p:last-child {
  color: #ffae00;
}
.about-block .about-bg .title-block div span {
  margin: 0 10px;
}

h4 {
  font-size: 20px;
  text-transform: uppercase;
}

.about-description {
  max-width: 1185px;
  margin: 0 auto 70px;
  color: #222222;
}
.about-description h3 {
  text-transform: uppercase;
  font-size: 35px;
  font-weight: bold;
  text-align: center;
  margin: 65px 0;
}
.about-description .description-block {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  font-size: 15px;
  font-weight: normal;
  line-height: 25px;
  margin: 0 10px;
}
.about-description .description-block div:first-child {
  margin-right: 30px;
}
.about-description .description-block img {
  max-width: 100%;
  height: auto;
}
.about-description .description-block p {
  margin-bottom: 26px;
}
.about-description .description-block ul {
  list-style-type: none;
  -webkit-padding-start: 10px;
          padding-inline-start: 10px;
}
.about-description .description-block ul li {
  margin-top: 10px;
}
.about-description .description-block ul li span {
  margin-right: 8px;
}

.doing-block {
  background: #eeeeee;
}
.doing-block h3 {
  text-transform: uppercase;
  font-size: 35px;
  font-weight: bold;
  text-align: center;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  padding: 65px 0 60px;
}
.doing-block .card-block {
  max-width: 1180px;
  margin: 0 auto;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  padding: 0 10px 85px;
}
.doing-block .card-block .card-block-item {
  background: white;
  -ms-flex-preferred-size: calc(33.33% - 30px);
      flex-basis: calc(33.33% - 30px);
}
.doing-block .card-block .card-block-item img {
  max-width: 100%;
  height: auto;
}
.doing-block .card-block .card-block-item .card-text {
  padding: 30px 20px;
}
.doing-block .card-block .card-block-item .card-text p {
  margin-top: 30px;
}

footer {
  background: #222222;
  color: #ffffff;
  font-size: 15px;
}
footer .footer-block {
  max-width: 1185px;
  margin: 0 auto;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
footer .footer-block div {
  padding: 15px;
}
footer .footer-block div a {
  margin-right: 25px;
  cursor: pointer;
  color: #ffffff;
  -webkit-transition: color 0.3s ease;
  transition: color 0.3s ease;
}
footer .footer-block div a:hover {
  color: #ffae00;
}

.mobile-menu {
  display: none;
}

@media (max-width: 825px) {
  .nav {
    display: none;
  }
  .mobile-menu {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    z-index: 3;
  }
  .mobile-menu .burger-menu {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    -ms-flex-pack: distribute;
        justify-content: space-around;
    width: 30px;
    height: 20px;
    background-color: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
  }
  .mobile-menu .burger-menu:hover span {
    background-color: #fff;
  }
  .mobile-menu .burger-menu__line {
    display: block;
    width: 100%;
    height: 2px;
    background-color: #fff;
    -webkit-transition: all 1.8s ease-in-out;
    transition: all 1.8s ease-in-out;
  }
  .mobile-menu .mobile-menu__list {
    display: none;
    position: absolute;
    top: 7%;
    left: 0;
    width: 100%;
    background: #222222;
    padding: 0;
    margin: 0;
    -webkit-transition: all 2s ease-in-out;
    transition: all 2s ease-in-out;
  }
  .mobile-menu .mobile-menu__list .mobile-menu-item {
    width: 100%;
  }
  .mobile-menu .mobile-menu__list .mobile-menu-item a {
    display: block;
    padding: 15px;
    color: #fff;
    text-align: center;
    text-decoration: none;
  }
  .mobile-menu .mobile-menu__list .mobile-menu-item a:hover {
    background-color: #444;
    color: #ffae00;
    cursor: pointer;
  }
  .mobile-menu.active .mobile-menu__list {
    display: block;
  }
  .description-block {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    padding-left: 25px;
  }
  .card-block {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
  }
  .card-block .card-block-item {
    width: 95%;
  }
  .card-block .card-block-item:not(:last-child) {
    margin-bottom: 25px;
  }
  .footer-block {
    padding: 0 20px;
  }
}
@media (max-width: 570px) {
  .footer-block {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: reverse;
        -ms-flex-direction: column-reverse;
            flex-direction: column-reverse;
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
  }
}