.nav__list, .certificates__list, .skills__list, .portfolio__list, .experience__list, .contacts__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.btn, .burger, .arrow-up {
  display: inline-block;
  margin: 0;
  padding: 0;
  font: inherit;
  text-decoration: none;
  background-color: transparent;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn, .about__photo-wrapper {
  border-radius: 0px;
}

.header, .certificates__card, .experience__card {
  -webkit-box-shadow: 1px 1px 9px 0 rgba(209, 206, 216, 0.5);
          box-shadow: 1px 1px 9px 0 rgba(209, 206, 216, 0.5);
}

html {
  scroll-behavior: smooth;
}

*,
:after,
:before {
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
}

body {
  font-family: "Montserrat", sans-serif;
  color: #272341;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  background-color: #ffffff;
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 150px 25px;
}

.container--s {
  padding-top: 70px;
  padding-bottom: 70px;
}

.container--m {
  padding-top: 100px;
  padding-bottom: 100px;
}

@media (max-width: 991px) {
  .container {
    max-width: 700px;
    padding: 100px 0;
  }
}

@media (max-width: 767px) {
  .container {
    max-width: 500px;
  }
}

@media (max-width: 575px) {
  .container {
    max-width: 600px;
    padding: 80px 25px;
  }
}

@media (max-width: 399px) {
  .container {
    padding-left: 15px;
    padding-right: 15px;
  }
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  border: 1px solid transparent;
  clip: rect(0, 0, 0, 0);
  -webkit-clip-path: inset(100%);
          clip-path: inset(100%);
}

.text-color {
  color: #5557d7;
  /* background-image: linear-gradient(135deg, #5d21f7, #8a4dd8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; */
}

.title {
  position: relative;
  margin: 0;
  margin-bottom: 40px;
  padding-bottom: 10px;
  font-size: 30px;
}

.title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 70px;
  height: 4px;
  background-color: #5557d7;
}

.subtitle {
  margin: 0;
  font-size: 18px;
}

.btn {
  position: relative;
  padding: 8px 16px;
  color: #5557d7;
  font-size: 16px;
  line-height: 1;
  border: 2px solid #5557d7;
  font-weight: 700;
  overflow: hidden;
  -webkit-transition: 0.6s cubic-bezier(0.19, 1, 0.22, 1);
  transition: 0.6s cubic-bezier(0.19, 1, 0.22, 1);
  /* &--color {
    background-image: linear-gradient(135deg, #5d21f7, #8a4dd8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;

    border-image: linear-gradient(135deg, #5d21f7, #8a4dd8);
    border-image-slice: 1;

    &::after {
      background-image: linear-gradient(135deg, #632cef, #8a4dd8);
    }

    &:hover,
    &:focus {
      -webkit-text-fill-color: $color-white;
    }
  } */
}

.btn--big {
  font-size: 24px;
}

@media (max-width: 767px) {
  .btn--big {
    font-size: 18px;
  }
}

.btn::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background-color: #5557d7;
  -webkit-transition: 0.3s cubic-bezier(0.19, 1, 0.22, 1);
  transition: 0.3s cubic-bezier(0.19, 1, 0.22, 1);
}

.btn:hover, .btn:focus {
  color: #ffffff;
  outline: none;
}

.btn:hover::after, .btn:focus::after {
  left: 0;
}

@-webkit-keyframes up-down {
  to {
    -webkit-transform: translateY(-50%);
            transform: translateY(-50%);
  }
}

@keyframes up-down {
  to {
    -webkit-transform: translateY(-50%);
            transform: translateY(-50%);
  }
}

.header {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  -webkit-transform: translate3d(0, -100%, 50px);
          transform: translate3d(0, -100%, 50px);
  visibility: hidden;
  -webkit-transition: opacity 0.7s, visibility 0.7s, -webkit-transform 0.7s;
  transition: opacity 0.7s, visibility 0.7s, -webkit-transform 0.7s;
  transition: opacity 0.7s, transform 0.7s, visibility 0.7s;
  transition: opacity 0.7s, transform 0.7s, visibility 0.7s, -webkit-transform 0.7s;
}

.header--active {
  opacity: 1;
  -webkit-transform: translate3d(0, 0, 50px);
          transform: translate3d(0, 0, 50px);
  visibility: visible;
}

.header--active-nav .nav {
  opacity: 1;
  -webkit-transform: scaleY(1);
          transform: scaleY(1);
  visibility: visible;
}

.header::before {
  content: "";
  position: absolute;
  z-index: 1;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: #ffffff;
}

.header__container {
  position: relative;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  min-height: 65px;
  padding-top: 0;
  padding-bottom: 0;
}

.logo {
  position: relative;
  z-index: 1;
  padding-right: 4px;
  color: #272341;
  font-size: 45px;
  font-weight: 700;
  text-decoration: none;
}

.logo::before {
  content: ".";
  position: absolute;
  bottom: -2px;
  left: 100%;
  color: #5557d7;
}

.burger {
  position: relative;
  z-index: 1;
  display: none;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  margin-left: auto;
  width: 40px;
  height: 37px;
}

@media (max-width: 991px) {
  .burger {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
  }
}

.burger::before, .burger::after {
  content: "";
  position: absolute;
  left: 50%;
  width: 24px;
  height: 3px;
  background-color: #272341;
  -webkit-transform: translateX(-50%);
          transform: translateX(-50%);
  -webkit-transition: 0.3s;
  transition: 0.3s;
}

.burger::before {
  top: 8px;
}

.burger::after {
  bottom: 8px;
}

.burger__line {
  display: block;
  margin: 0 auto;
  width: 24px;
  height: 3px;
  background-color: #272341;
  -webkit-transition: 0.3s;
  transition: 0.3s;
}

.burger--active::before {
  top: 50%;
  -webkit-transform: translate(-50%, -50%) rotate(40deg);
          transform: translate(-50%, -50%) rotate(40deg);
}

.burger--active::after {
  top: 50%;
  -webkit-transform: translate(-50%, -50%) rotate(-40deg);
          transform: translate(-50%, -50%) rotate(-40deg);
}

.burger--active .burger__line {
  -webkit-transform: scale(0);
          transform: scale(0);
}

.nav {
  position: relative;
  z-index: 1;
  min-width: 60%;
  margin-left: auto;
  -webkit-transition: -webkit-transform 0.6s;
  transition: -webkit-transform 0.6s;
  transition: transform 0.6s;
  transition: transform 0.6s, -webkit-transform 0.6s;
}

.nav::-webkit-scrollbar {
  width: 0;
}

@media (max-width: 991px) {
  .nav {
    position: absolute;
    z-index: 0;
    top: 0;
    left: 0;
    right: 0;
    padding: 95px 30px 30px;
    max-height: 100vh;
    background-color: #ffffff;
    -webkit-box-shadow: 1px 1px 9px 0 rgba(209, 206, 216, 0.5);
            box-shadow: 1px 1px 9px 0 rgba(209, 206, 216, 0.5);
    visibility: hidden;
    overflow: auto;
    opacity: 0;
    -webkit-transform: scaleY(0);
            transform: scaleY(0);
    -webkit-transform-origin: top;
            transform-origin: top;
  }
}

@media (max-width: 575px) {
  .nav {
    padding: 95px 15px 20px;
  }
}

.nav__list {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}

@media (max-width: 991px) {
  .nav__list {
    display: block;
  }
}

.nav__item {
  margin-right: 20px;
}

.nav__item:last-child {
  margin-right: 0;
}

@media (max-width: 991px) {
  .nav__item {
    margin-bottom: 30px;
  }
  .nav__item:last-child {
    margin-bottom: 0;
  }
}

.nav__link {
  position: relative;
  padding-bottom: 8px;
  color: #272341;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  text-transform: uppercase;
  -webkit-transition: 0.3s;
  transition: 0.3s;
}

@media (max-width: 767px) {
  .nav__link {
    font-size: 16px;
  }
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background-color: #5557d7;
  opacity: 0;
  -webkit-transition: 0.3s;
  transition: 0.3s;
  -webkit-transform: translateY(10px);
          transform: translateY(10px);
}

.nav__link:hover::after, .nav__link--active::after {
  opacity: 1;
  -webkit-transform: translateY(0px);
          transform: translateY(0px);
}

.greeting {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  min-height: 100vh;
}

.greeting__container {
  width: 100%;
}

@media (max-width: 1199px) {
  .greeting__container {
    padding-left: 50px;
  }
}

@media (max-width: 991px) {
  .greeting__container {
    padding-left: 0;
  }
}

@media (max-width: 575px) {
  .greeting__container {
    max-width: 400px;
    padding-left: 20px;
  }
}

.greeting__text {
  margin: 0;
  margin-bottom: 35px;
  font-size: 56px;
  font-weight: 700;
  line-height: 1.2;
  opacity: 0;
  -webkit-transform: translateX(-5%);
          transform: translateX(-5%);
  -webkit-transition: 1s ease-in-out;
  transition: 1s ease-in-out;
}

@media (max-width: 1199px) {
  .greeting__text {
    font-size: 45px;
  }
}

@media (max-width: 991px) {
  .greeting__text {
    font-size: 40px;
  }
}

@media (max-width: 767px) {
  .greeting__text {
    font-size: 28px;
  }
}

@media (max-width: 575px) {
  .greeting__text {
    line-height: 1.5;
  }
}

.greeting__btn {
  opacity: 0;
  -webkit-transform: translateX(-30%);
          transform: translateX(-30%);
  -webkit-transition: opacity 1.2s ease 0.6s, color 0.3s cubic-bezier(0.19, 1, 0.22, 1), -webkit-transform 1s ease-in-out 0.6s;
  transition: opacity 1.2s ease 0.6s, color 0.3s cubic-bezier(0.19, 1, 0.22, 1), -webkit-transform 1s ease-in-out 0.6s;
  transition: transform 1s ease-in-out 0.6s, opacity 1.2s ease 0.6s, color 0.3s cubic-bezier(0.19, 1, 0.22, 1);
  transition: transform 1s ease-in-out 0.6s, opacity 1.2s ease 0.6s, color 0.3s cubic-bezier(0.19, 1, 0.22, 1), -webkit-transform 1s ease-in-out 0.6s;
}

.about__container {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: start;
      -ms-flex-align: start;
          align-items: start;
}

@media (max-width: 767px) {
  .about__container {
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
  }
}

.about__photo {
  position: relative;
  margin-right: 120px;
  /* &::after {
      @extend %bdrs;

      content: "";
      position: absolute;
      z-index: -1;
      width: 100%;
      height: 100%;
      top: -10%;
      right: -10%;
      border: 5px solid $color-grey;
      opacity: 0;
      transition: 0.2s ease-in-out;

      .scroll-item--active & {
        opacity: 1;
      }

      @include breakpoint-max(md) {
        display: none;
      }
    } */
}

.about__photo:hover .about__photo-wrapper {
  -webkit-transform: translateX(10%);
          transform: translateX(10%);
}

.about__photo:hover::after {
  top: 10%;
  right: 0;
}

.about__photo:hover img {
  -webkit-transform: scale(1.1);
          transform: scale(1.1);
}

@media (max-width: 991px) {
  .about__photo {
    margin-right: 100px;
  }
}

@media (max-width: 767px) {
  .about__photo {
    width: 100%;
    margin: 0 auto 50px;
    padding: 30px;
    pointer-events: none;
  }
}

@media (max-width: 575px) {
  .about__photo {
    padding: 0;
  }
}

.about__photo-wrapper {
  width: 350px;
  height: 350px;
  margin: 0;
  overflow: hidden;
  opacity: 0;
  -webkit-transform: translateX(-10%);
          transform: translateX(-10%);
  -webkit-transition: 0.7s ease-in-out;
  transition: 0.7s ease-in-out;
}

@media (max-width: 991px) {
  .about__photo-wrapper {
    width: 250px;
    height: 250px;
  }
}

@media (max-width: 767px) {
  .about__photo-wrapper {
    width: 100%;
    height: 350px;
  }
}

@media (max-width: 399px) {
  .about__photo-wrapper {
    height: 300px;
  }
}

.about__photo-wrapper img {
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
  -webkit-transition: 0.7s;
  transition: 0.7s;
}

.about__content {
  -webkit-box-flex: 1;
      -ms-flex-positive: 1;
          flex-grow: 1;
  opacity: 0;
  -webkit-transform: translateY(15%);
          transform: translateY(15%);
  -webkit-transition: 0.7s ease-in-out 0.5s;
  transition: 0.7s ease-in-out 0.5s;
}

.about__text {
  margin: 0;
  margin-bottom: 30px;
  line-height: 2;
}

@media (max-width: 575px) {
  .about__text:last-of-type {
    margin-bottom: 50px;
  }
}

.certificates {
  background-color: #f7f7f7;
}

.certificates__title {
  margin-bottom: 60px;
  opacity: 0;
  -webkit-transition: 1s;
  transition: 1s;
}

.certificates__list {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  -ms-flex-pack: distribute;
      justify-content: space-around;
}

.certificates__item {
  -ms-flex-preferred-size: 30%;
      flex-basis: 30%;
  min-height: 335px;
}

.certificates__item:nth-child(2) .certificates__card {
  -webkit-transition: background-color 0.3s, opacity 0.8s 1s, -webkit-transform 0.6s ease-in-out 1s;
  transition: background-color 0.3s, opacity 0.8s 1s, -webkit-transform 0.6s ease-in-out 1s;
  transition: background-color 0.3s, transform 0.6s ease-in-out 1s,
 opacity 0.8s 1s;
  transition: background-color 0.3s, transform 0.6s ease-in-out 1s,
 opacity 0.8s 1s, -webkit-transform 0.6s ease-in-out 1s;
}

.certificates__item:nth-child(3) .certificates__card {
  -webkit-transition: background-color 0.3s, opacity 0.8s 1.3s, -webkit-transform 0.6s ease-in-out 1.3s;
  transition: background-color 0.3s, opacity 0.8s 1.3s, -webkit-transform 0.6s ease-in-out 1.3s;
  transition: background-color 0.3s, transform 0.6s ease-in-out 1.3s,
 opacity 0.8s 1.3s;
  transition: background-color 0.3s, transform 0.6s ease-in-out 1.3s,
 opacity 0.8s 1.3s, -webkit-transform 0.6s ease-in-out 1.3s;
}

@media (max-width: 991px) {
  .certificates__item {
    -ms-flex-preferred-size: 45%;
        flex-basis: 45%;
    margin-bottom: 35px;
  }
  .certificates__item:nth-child(2) .certificates__card,
  .certificates__item:nth-child(3) .certificates__card {
    -webkit-transition: background-color 0.3s, opacity 0.8s 0.5s, -webkit-transform 0.6s ease-in-out 0.5s;
    transition: background-color 0.3s, opacity 0.8s 0.5s, -webkit-transform 0.6s ease-in-out 0.5s;
    transition: background-color 0.3s, transform 0.6s ease-in-out 0.5s,
 opacity 0.8s 0.5s;
    transition: background-color 0.3s, transform 0.6s ease-in-out 0.5s,
 opacity 0.8s 0.5s, -webkit-transform 0.6s ease-in-out 0.5s;
  }
}

@media (max-width: 767px) {
  .certificates__item {
    -ms-flex-preferred-size: 70%;
        flex-basis: 70%;
  }
}

@media (max-width: 575px) {
  .certificates__item {
    -ms-flex-preferred-size: 80%;
        flex-basis: 80%;
  }
}

@media (max-width: 399px) {
  .certificates__item {
    -ms-flex-preferred-size: 100%;
        flex-basis: 100%;
    min-height: 300px;
  }
}

.certificates__card {
  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;
  width: 100%;
  height: 100%;
  padding: 50px 15px;
  text-align: center;
  background-color: #ffffff;
  opacity: 0;
  -webkit-transition: background-color 0.3s, opacity 0.8s 0.5s, -webkit-transform 0.6s ease-in-out 0.5s;
  transition: background-color 0.3s, opacity 0.8s 0.5s, -webkit-transform 0.6s ease-in-out 0.5s;
  transition: background-color 0.3s, transform 0.6s ease-in-out 0.5s,
 opacity 0.8s 0.5s;
  transition: background-color 0.3s, transform 0.6s ease-in-out 0.5s,
 opacity 0.8s 0.5s, -webkit-transform 0.6s ease-in-out 0.5s;
  -webkit-transform: translateX(-20%);
          transform: translateX(-20%);
}

.certificates__card::before {
  margin-bottom: 30px;
  font-size: 45px;
}

.certificates__card:hover {
  color: #ffffff;
  background-color: #5557d7;
}

.certificates__card:hover p {
  color: #ffffff;
}

@media (max-width: 399px) {
  .certificates__card {
    padding: 30px 15px;
  }
}

.certificates__name {
  margin-bottom: 10px;
  font-size: 18px;
  font-weight: 700;
}

.certificates__company {
  -webkit-box-flex: 1;
      -ms-flex: 1 1 auto;
          flex: 1 1 auto;
  max-width: 200px;
  margin: 0;
  margin-bottom: 20px;
  font-size: 14px;
  line-height: 1.3;
}

.certificates__description {
  -webkit-box-flex: 1;
      -ms-flex: 1 1 auto;
          flex: 1 1 auto;
  color: #c2c2c2;
  font-size: 14px;
}

.certificates__description p {
  margin: 0;
}

.skills {
  border-bottom: 2px solid #f7f7f7;
  overflow: hidden;
}

.skills__container {
  padding-top: 70px;
  padding-bottom: 70px;
  opacity: 0;
  -webkit-transform: translateX(100%);
          transform: translateX(100%);
  -webkit-transition: 1s;
  transition: 1s;
}

.skills__list {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  width: 100vw;
}

.skills__item {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  text-align: center;
  -webkit-transition: 0.3s;
  transition: 0.3s;
}

.skills__item::before {
  margin-bottom: 10px;
  font-size: 56px;
  -webkit-transition: -webkit-transform 0.3s;
  transition: -webkit-transform 0.3s;
  transition: transform 0.3s;
  transition: transform 0.3s, -webkit-transform 0.3s;
}

.skills__item:hover {
  color: #5557d7;
  -webkit-transform: scale(1.5);
          transform: scale(1.5);
}

.swiper-wrapper {
  -webkit-transition-timing-function: linear !important;
          transition-timing-function: linear !important;
}

.portfolio {
  text-align: center;
}

.portfolio__title {
  opacity: 0;
  -webkit-transform: translateY(100%);
          transform: translateY(100%);
  -webkit-transition: 1.2s ease-in-out;
  transition: 1.2s ease-in-out;
}

.portfolio__title::after {
  left: 50%;
  width: 90px;
  -webkit-transform: translateX(-50%);
          transform: translateX(-50%);
}

.portfolio__subtitle {
  margin: 0;
  margin-bottom: 40px;
  opacity: 0;
  -webkit-transform: translateY(100%);
          transform: translateY(100%);
  -webkit-transition: 1.2s ease-in-out 0.5s;
  transition: 1.2s ease-in-out 0.5s;
}

.portfolio__list {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}

@media (max-width: 1199px) {
  .portfolio__list {
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
  }
}

.portfolio__item {
  -ms-flex-preferred-size: 30%;
      flex-basis: 30%;
  margin-top: 50px;
  opacity: 0;
  -webkit-transform: scale(0);
          transform: scale(0);
  -webkit-transition: 1.2s ease-in-out;
  transition: 1.2s ease-in-out;
}

.portfolio__item.scroll-item--active {
  -webkit-transform: scale(1);
          transform: scale(1);
}

@media (max-width: 1199px) {
  .portfolio__item {
    -ms-flex-preferred-size: 32%;
        flex-basis: 32%;
    margin-right: 50px;
  }
  .portfolio__item:nth-child(2n) {
    margin-right: 0;
  }
}

@media (max-width: 991px) {
  .portfolio__item {
    -ms-flex-preferred-size: 46%;
        flex-basis: 46%;
  }
}

@media (max-width: 767px) {
  .portfolio__item {
    -ms-flex-preferred-size: 70%;
        flex-basis: 70%;
    margin-right: 0;
  }
}

@media (max-width: 575px) {
  .portfolio__item {
    -ms-flex-preferred-size: 80%;
        flex-basis: 80%;
  }
}

@media (max-width: 399px) {
  .portfolio__item {
    -ms-flex-preferred-size: 100%;
        flex-basis: 100%;
  }
}

.portfolio__card {
  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;
  position: relative;
  height: 100%;
  margin: 0;
  color: #ffffff;
  font-weight: 400;
  border: 2px solid #f7f7f7;
  -webkit-transform-style: preserve-3d;
          transform-style: preserve-3d;
}

.portfolio__card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #272341;
  opacity: 0;
  -webkit-transition: 0.3s;
  transition: 0.3s;
}

.portfolio__card:hover::after {
  opacity: 0.9;
}

.portfolio__card:hover .portfolio__card-img img {
  -webkit-transform: scale(1.3);
          transform: scale(1.3);
}

.portfolio__card:hover .portfolio__card-about {
  opacity: 1;
  -webkit-transform: translate3d(0, 0, 40px);
          transform: translate3d(0, 0, 40px);
}

.portfolio__card:hover .portfolio__card-description,
.portfolio__card:hover .portfolio__card-link {
  -webkit-transform: translate(0, 0);
          transform: translate(0, 0);
}

.portfolio__card-img {
  position: absolute;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.portfolio__card-img img {
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
  -webkit-transition: 0.5s ease-in-out;
  transition: 0.5s ease-in-out;
}

.portfolio__item:nth-child(1) .portfolio__card-img img {
  -o-object-position: left bottom;
     object-position: left bottom;
}

.portfolio__item:nth-child(4) .portfolio__card-img img {
  -o-object-position: right bottom;
     object-position: right bottom;
}

.portfolio__card-about {
  -webkit-box-flex: 1;
      -ms-flex-positive: 1;
          flex-grow: 1;
  width: 100%;
  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-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  position: relative;
  z-index: 1;
  min-height: 300px;
  padding: 20% 10%;
  -webkit-transform-style: preserve-3d;
          transform-style: preserve-3d;
  overflow: hidden;
  opacity: 0;
}

@media (max-width: 575px) {
  .portfolio__card-about {
    padding: 20% 5%;
    min-height: auto;
  }
}

.portfolio__card-title {
  color: #5557d7;
  font-size: 24px;
  font-weight: 400;
}

@media (max-width: 399px) {
  .portfolio__card-title {
    font-size: 18px;
  }
}

.portfolio__card-description {
  -webkit-box-flex: 1;
      -ms-flex-positive: 1;
          flex-grow: 1;
  margin-top: 20px;
  margin-bottom: 25px;
  -webkit-transform: translate(0, -120%);
          transform: translate(0, -120%);
  -webkit-transition: 0.7s;
  transition: 0.7s;
}

@media (max-width: 399px) {
  .portfolio__card-description {
    font-size: 14px;
  }
}

.portfolio__card-link {
  display: inline-block;
  color: #ffffff;
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 0.8px;
  -webkit-transition: 0.5s;
  transition: 0.5s;
  -webkit-transform: translate(0, 50%);
          transform: translate(0, 50%);
}

@media (max-width: 399px) {
  .portfolio__card-link {
    font-size: 14px;
  }
}

.portfolio__card-link:hover {
  color: #272341;
  text-shadow: 0 0 3px rgba(85, 87, 215, 0.2);
}

.experience {
  background-color: #f7f7f7;
  overflow: hidden;
}

.experience__inner {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: start;
      -ms-flex-align: start;
          align-items: start;
  margin-bottom: 100px;
}

@media (max-width: 767px) {
  .experience__inner {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
  }
}

.experience__inner:last-child {
  margin-bottom: 0;
}

.experience__title {
  min-width: 40%;
  opacity: 0;
  -webkit-transition: 1.5s;
  transition: 1.5s;
}

.experience__list {
  -webkit-box-flex: 1;
      -ms-flex-positive: 1;
          flex-grow: 1;
}

@media (max-width: 991px) {
  .experience__list {
    margin-top: 80px;
  }
}

@media (max-width: 767px) {
  .experience__list {
    margin-top: 20px;
    margin-left: 90px;
  }
}

@media (max-width: 399px) {
  .experience__list {
    margin-left: 50px;
  }
}

.experience__item {
  position: relative;
  padding-bottom: 40px;
}

.experience__item::before, .experience__item::after {
  content: "";
  position: absolute;
  left: -70px;
  width: 3px;
  height: 50%;
  background-color: #5557d7;
  -webkit-transform: translateX(-50%);
          transform: translateX(-50%);
}

@media (max-width: 399px) {
  .experience__item::before, .experience__item::after {
    left: -30px;
  }
}

.experience__item::before {
  bottom: 50%;
}

.experience__item::after {
  top: 50%;
}

.experience__item:first-child::before {
  display: none;
}

.experience__item:last-child {
  padding-bottom: 0;
}

.experience__item:last-child::after {
  display: none;
}

.experience__item:nth-child(2) .experience__card {
  -webkit-transition: background-color 0.2s, opacity 0.7s 0.5s, -webkit-transform 0.7s ease-in-out 0.5s;
  transition: background-color 0.2s, opacity 0.7s 0.5s, -webkit-transform 0.7s ease-in-out 0.5s;
  transition: background-color 0.2s, transform 0.7s ease-in-out 0.5s,
 opacity 0.7s 0.5s;
  transition: background-color 0.2s, transform 0.7s ease-in-out 0.5s,
 opacity 0.7s 0.5s, -webkit-transform 0.7s ease-in-out 0.5s;
}

.experience__item:nth-child(2) .experience__card::before, .experience__item:nth-child(2) .experience__card::after {
  -webkit-transition: opacity 0.2s 1.5s;
  transition: opacity 0.2s 1.5s;
}

.experience__item:nth-child(3) .experience__card {
  -webkit-transition: background-color 0.2s, opacity 0.7s 0.8s, -webkit-transform 0.7s ease-in-out 0.8s;
  transition: background-color 0.2s, opacity 0.7s 0.8s, -webkit-transform 0.7s ease-in-out 0.8s;
  transition: background-color 0.2s, transform 0.7s ease-in-out 0.8s,
 opacity 0.7s 0.8s;
  transition: background-color 0.2s, transform 0.7s ease-in-out 0.8s,
 opacity 0.7s 0.8s, -webkit-transform 0.7s ease-in-out 0.8s;
}

.experience__item:nth-child(3) .experience__card::before, .experience__item:nth-child(3) .experience__card::after {
  -webkit-transition: opacity 0.2s 1.7s;
  transition: opacity 0.2s 1.7s;
}

.experience__item:nth-child(4) .experience__card {
  -webkit-transition: background-color 0.2s, opacity 0.7s 1s, -webkit-transform 0.7s ease-in-out 1s;
  transition: background-color 0.2s, opacity 0.7s 1s, -webkit-transform 0.7s ease-in-out 1s;
  transition: background-color 0.2s, transform 0.7s ease-in-out 1s,
 opacity 0.7s 1s;
  transition: background-color 0.2s, transform 0.7s ease-in-out 1s,
 opacity 0.7s 1s, -webkit-transform 0.7s ease-in-out 1s;
}

.experience__item:nth-child(4) .experience__card::before, .experience__item:nth-child(4) .experience__card::after {
  -webkit-transition: opacity 0.2s 1.8s;
  transition: opacity 0.2s 1.8s;
}

.experience__card {
  position: relative;
  display: block;
  padding: 30px 30px;
  color: #272341;
  text-decoration: none;
  background-color: #ffffff;
  opacity: 0;
  -webkit-transition: background-color 0.2s, opacity 0.5s 0.2s, -webkit-transform 0.7s ease-in-out 0.2s;
  transition: background-color 0.2s, opacity 0.5s 0.2s, -webkit-transform 0.7s ease-in-out 0.2s;
  transition: background-color 0.2s, transform 0.7s ease-in-out 0.2s,
 opacity 0.5s 0.2s;
  transition: background-color 0.2s, transform 0.7s ease-in-out 0.2s,
 opacity 0.5s 0.2s, -webkit-transform 0.7s ease-in-out 0.2s;
  -webkit-transform: translateX(50%);
          transform: translateX(50%);
}

.experience__card:hover, .experience__card:focus {
  color: #ffffff;
  background-color: #5557d7;
}

.experience__card::before, .experience__card::after {
  content: "";
  position: absolute;
  z-index: 1;
  top: 50%;
  left: -70px;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
  opacity: 0;
  -webkit-transition: opacity 0.2s 1s;
  transition: opacity 0.2s 1s;
}

.scroll-item--active .experience__card::before, .scroll-item--active .experience__card::after {
  opacity: 1;
}

@media (max-width: 399px) {
  .experience__card::before, .experience__card::after {
    left: -30px;
  }
}

.experience__card::before {
  width: 40px;
  height: 40px;
  background-color: #f7f7f7;
}

.experience__card::after {
  width: 20px;
  height: 20px;
  border: 2px solid #5557d7;
  border-radius: 50%;
}

.experience__card-title {
  margin-bottom: 10px;
}

.experience__card-date {
  margin: 0;
  margin-bottom: 20px;
  color: #c2c2c2;
  font-size: 14px;
}

.experience__card-description {
  margin: 0;
}

.contacts {
  color: #ffffff;
  text-align: center;
  background-color: #272341;
}

.contacts__container {
  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;
}

.contacts__logo {
  margin-bottom: 25px;
  color: #ffffff;
  opacity: 0;
  -webkit-transition: 0.5s;
  transition: 0.5s;
}

.contacts__logo::before {
  color: #ffffff;
}

.contacts__slogan {
  max-width: 350px;
  margin: 0;
  margin-bottom: 60px;
  font-size: 24px;
  line-height: 1.4;
  opacity: 0;
  -webkit-transform: translateY(20%);
          transform: translateY(20%);
  -webkit-transition: 0.5s;
  transition: 0.5s;
}

.contacts__slogan.scroll-item--active {
  opacity: 0.7;
}

.contacts__list {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  margin: 0 auto;
  margin-bottom: 60px;
  width: 350px;
}

@media (max-width: 399px) {
  .contacts__list {
    width: 100%;
  }
}

.contacts__link {
  position: relative;
  display: block;
  width: 45px;
  height: 45px;
  color: #ffffff;
  font-size: 18px;
  text-decoration: none;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  opacity: 0;
  -webkit-transform: translateY(20%);
          transform: translateY(20%);
  -webkit-transition: background-color 0.5s, opacity 0.5s 0.2s, -webkit-transform 0.5s ease 0.2s;
  transition: background-color 0.5s, opacity 0.5s 0.2s, -webkit-transform 0.5s ease 0.2s;
  transition: background-color 0.5s, transform 0.5s ease 0.2s,
 opacity 0.5s 0.2s;
  transition: background-color 0.5s, transform 0.5s ease 0.2s,
 opacity 0.5s 0.2s, -webkit-transform 0.5s ease 0.2s;
}

@media (max-width: 399px) {
  .contacts__link {
    width: 40px;
    height: 40px;
  }
}

.contacts__link::before {
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}

.contacts__link:hover, .contacts__link:hover.scroll-show {
  background-color: #ffffff;
  -webkit-transform: translateY(-5px);
          transform: translateY(-5px);
}

.contacts__link:hover::before, .contacts__link:hover.scroll-show::before {
  color: #5557d7;
}

.arrow-up {
  position: relative;
  width: 20px;
  height: 20px;
  margin-bottom: 45px;
  -webkit-animation-name: up-down;
          animation-name: up-down;
  -webkit-animation-duration: 0.8s;
          animation-duration: 0.8s;
  -webkit-animation-iteration-count: infinite;
          animation-iteration-count: infinite;
  -webkit-animation-fill-mode: forwards;
          animation-fill-mode: forwards;
  -webkit-animation-direction: alternate;
          animation-direction: alternate;
}

.arrow-up:hover {
  -webkit-animation-play-state: paused;
          animation-play-state: paused;
}

.arrow-up:hover::before, .arrow-up:hover::after {
  background-color: #5557d7;
}

.arrow-up::before, .arrow-up::after {
  content: "";
  position: absolute;
  left: 50%;
  width: 100%;
  height: 3px;
  background-color: #ffffff;
  -webkit-transform: rotate(45deg);
          transform: rotate(45deg);
  -webkit-transform-origin: 0 0;
          transform-origin: 0 0;
}

.arrow-up:before {
  left: -50%;
  -webkit-transform-origin: 100% 50%;
          transform-origin: 100% 50%;
  -webkit-transform: rotate(-45deg);
          transform: rotate(-45deg);
}

.copyright {
  font-size: 14px;
  opacity: 0.7;
}

.copyright a {
  color: #ffffff;
  text-decoration: none;
  -webkit-transition: 0.3s;
  transition: 0.3s;
}

.copyright a:hover {
  color: #5557d7;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.scroll-item--active,
.scroll-item--active .scroll-show {
  -webkit-transform: translate(0, 0);
          transform: translate(0, 0);
  opacity: 1;
}