.about-us {
  color: var(--black);
  background: var(--light-grey);
}

.about-us--container {
  position: relative;
  z-index: 1;
}

.about-us--header {
  text-align: center;
  padding: 204px 16px 56px;
  max-width: 850px;
  margin-inline: auto;
  position: relative;
}

@media screen and (min-width: 768px) {
  .about-us--header {
    padding: 128px 40px 108px;
  }
}

@media screen and (min-width: 1024px) {
  .about-us--header {
    padding: 204px 80px 270px;
  }
}

.about-us--header::before {
  content: "";
  background: url("../images/monogramme.svg") no-repeat center;
  background-size: contain;
  height: 80px;
  width: 80px;
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  opacity: 1;
}

@media screen and (min-width: 1024px) {
  .about-us--header::before {
    top: -28px;
    height: 160px;
    width: 160px;
  }
}

@media screen and (min-width: 1280px) {
  .about-us--header::before {
    opacity: 0;
  }
}

.about-us--header.active::before {
  opacity: 1;
  transition: opacity 1s;
}

.about-us--header::after {
  content: "";
  background: var(--yellow);
  height: 100px;
  width: 80px;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -100%);
}

@media screen and (min-width: 1024px) {
  .about-us--header::after {
    display: none;
  }
}

.about-us--header span {
  color: var(--grey);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  font-size: 1.125rem;
  font-style: normal;
  font-weight: 500;
  line-height: 180%;
  letter-spacing: 0.72px;
}

.about-us--header span::after {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--yellow);
}

.about-us--header p {
  font-size: 1rem;
  line-height: 180%;
}

.about-us--header h2 {
  margin-bottom: 40px;
}

.about-us--header .btn {
  margin-top: 40px;
  margin-inline: auto;
}

.about-us--numbers {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  row-gap: 40px;
  padding: 0 16px 64px;
}

@media screen and (min-width: 768px) {
  .about-us--numbers {
    padding: 0 40px 64px;
    justify-content: space-between;
  }
}

@media screen and (min-width: 1024px) {
  .about-us--numbers {
    gap: 64px;
    row-gap: 48px;
    padding: 0 80px 64px;
  }
}

.about-us--item {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

@media screen and (min-width: 768px) {
  .about-us--item {
    width: calc(50% - 32px);
  }
}

@media screen and (min-width: 1360px) {
  .about-us--item {
    width: auto;
    flex: 0 1 247px;
    max-width: 25%;
  }
}

.about-us--item::before {
  content: "";
  width: 10px;
  height: 10px;
  background: var(--yellow);
}

.about-us .number {
  font-size: 5rem;
  font-style: normal;
  font-weight: 300;
  line-height: normal;
}

.about-us .desc {
  font-size: 1rem;
  font-style: normal;
  font-weight: 500;
  line-height: 180%;
}

.about-us .parallax-image {
  width: 180px;
  height: 120px;
  position: absolute;
  z-index: -1;
}

@media screen and (min-width: 768px) {
  .about-us .parallax-image {
    width: 25%;
    max-width: 360px;
    height: 138px;
  }
}

@media screen and (min-width: 1024px) {
  .about-us .parallax-image {
    height: 240px;
  }
}

.about-us .parallax-image img {
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
  object-fit: cover;
  -o-object-position: center;
  object-position: center;
  -webkit-filter: grayscale(1);
  filter: grayscale(1);
  opacity: 0.4;
}

.about-us .parallax-image.parallax1 {
  left: 0;
  top: 65px;
}

.about-us .parallax-image.parallax2 {
  right: 0;
  top: 20%;
}

.about-us .parallax-image.parallax3 {
  left: 25%;
  top: 40%;
}

.is-animated .is-step-animation:nth-child(1) {
  opacity: 0;
  -webkit-animation: apparitionDeBasEnHaut 0.5s ease-out 0.4s;
  animation: apparitionDeBasEnHaut 0.5s ease-out 0.4s;
  -webkit-animation-fill-mode: forwards;
  animation-fill-mode: forwards;
}

.is-animated .is-step-animation:nth-child(2) {
  opacity: 0;
  -webkit-animation: apparitionDeBasEnHaut 0.5s ease-out 0.8s;
  animation: apparitionDeBasEnHaut 0.5s ease-out 0.8s;
  -webkit-animation-fill-mode: forwards;
  animation-fill-mode: forwards;
}

.is-animated .is-step-animation:nth-child(3) {
  opacity: 0;
  -webkit-animation: apparitionDeBasEnHaut 0.5s ease-out 1.2s;
  animation: apparitionDeBasEnHaut 0.5s ease-out 1.2s;
  -webkit-animation-fill-mode: forwards;
  animation-fill-mode: forwards;
}

.is-animated .is-step-animation:nth-child(4) {
  opacity: 0;
  -webkit-animation: apparitionDeBasEnHaut 0.5s ease-out 1.6s;
  animation: apparitionDeBasEnHaut 0.5s ease-out 1.6s;
  -webkit-animation-fill-mode: forwards;
  animation-fill-mode: forwards;
}

.is-animated .is-step-animation:nth-child(5) {
  opacity: 0;
  -webkit-animation: apparitionDeBasEnHaut 0.5s ease-out 2s;
  animation: apparitionDeBasEnHaut 0.5s ease-out 2s;
  -webkit-animation-fill-mode: forwards;
  animation-fill-mode: forwards;
}

@-webkit-keyframes apparitionDeBasEnHaut {
  from {
    opacity: 0;
    transform: translateY(100px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes apparitionDeBasEnHaut {
  from {
    opacity: 0;
    transform: translateY(100px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}