* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  max-width: 1440px;
  margin: auto;
}

.container {
  max-width: 1200px;
  margin: auto;
  /* position: relative; */
}

header {
  width: 1200px;
  padding: 20px 0;
  display: flex;
  justify-content: space-between;

}

nav ul {
  display: flex;
  list-style: none;
  justify-content: space-between;
  width: 360px;

  a {
    text-decoration: none;
    color: inherit;
    font-family: 'Francois One', sans-serif;
    font-size: 22px;

  }

  span {
    font-family: 'Francois One', sans-serif;
    font-size: 22px;
  }
}

main {
  max-width: 1200px;
  border-bottom: 2px solid #E6E6E6;
  padding-bottom: 20px;
  margin-bottom: 40px;
}

main ul {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 0 15px;
  gap: 30px;


  li {
    list-style: none;
    height: 180px;
    width: 270px;
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;

    &:nth-child(3) .flip-card-front {
      background-color: #000;
    }

    &:nth-child(3) .flip-card-back {
      background-color: #E6E6E6;
;
    }
  }
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

h2 {
  font-family: 'Roboto', sans-serif;
  font-weight: 600;
  font-size: 36px;
  line-height: 133%;
  letter-spacing: 0.04em;
  color: #000;
  padding: 72px 0 40px 0;
  border-bottom: 2px solid #E6E6E6;
  margin-bottom: 20px;

  &::before {
    content: "";
    width: 100px;
    height: 5px;
    background-color: #000;
    vertical-align: middle;
    display: inline-block;
    margin-right: 20px;
  }
}

li:hover .flip-card-inner {
  transform: rotatex(180deg);
}

.flip-card-front,
.flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
}

.flip-card-front {
  background-color: #E6E6E6;
  border-radius: 8px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.flip-card-back {
  background-color: #000;
  transform: rotatex(180deg);
  border-radius: 8px;
  display: flex;
  justify-content: center;
  align-items: center;
}