.about {
  padding: 0;
  display: block;
}

.content-header {
  width: 100%;
  position: relative;
}

.content-lettering {
  width: 100%;
  max-width: 1080px;
  height: auto;
  margin: auto;
  font-size: 14px;
  line-height: 20px;
  padding: 80px 16% 24px 0;
}
.content-lettering h1 {
  color: var(--color-blue-light);
  width: 100%;
  font-size: 40px;
  line-height: 40px;
  margin: 0 0 16px;
}

.about-timeline {
  width: 100%;
  max-width: 1080px;
  height: auto;
  margin: auto;
}
.about-timeline .timeline-date {
  padding: 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 16px;
  line-height: 24px;
}
.about-timeline .timeline-date h2 {
  color: var(--color-blue-light);
  font-size: 40px;
  line-height: 40px;
}
.about-timeline .timeline-date .lettering {
  width: 40%;
}
.about-timeline .timeline-date .timeline-image {
  width: 50%;
  border-radius: 8px;
}

.about-quality {
  width: 100%;
  margin: auto;
  display: flex;
  flex-wrap: wrap;
  padding: 80px 10%;
}
.about-quality h2 {
  width: 100%;
  height: auto;
  padding: 24px 0 0;
  color: var(--color-blue-light);
  font-size: 40px;
  line-height: 40px;
}
.about-quality h3 {
  color: var(--color-blue);
  width: 100%;
  margin: 24px 0 16px;
  font-size: 24px;
  line-height: 24px;
}
.about-quality h4 {
  color: var(--color-blue);
  width: 100%;
  margin: 24px 0 16px;
  font-size: 18px;
  line-height: 18px;
}
.about-quality .quality-policy {
  width: 100%;
  padding: 0 80px 40px 0;
  font-size: 16px;
  line-height: 26px;
}
.about-quality .quality {
  width: 19%;
  background-color: var(--color-grey-lightest);
  padding: 32px;
  margin: 0 auto 16px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}
.about-quality .quality h3 {
  margin: 0;
}

.about-images {
  width: 80%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  margin: 40px auto 80px;
}
.about-images .content-images:nth-child(1) {
  width: 55%;
}
.about-images .content-images:nth-child(2) {
  width: 40%;
}

.about-social {
  width: 100%;
  background-color: var(--color-grey-lightest);
  padding: 80px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}
.about-social .social-images {
  width: 70%;
}
.about-social .social-content {
  width: 25%;
}
.about-social .social-content h2 {
  color: var(--color-blue-light);
  font-size: 40px;
  line-height: 40px;
}

@media (max-width: 900px) {
  .content-lettering {
    padding: 40px;
  }
  .content-lettering h1 {
    font-size: 32px;
    line-height: 32px;
  }
  .about-timeline .timeline-date {
    padding: 40px;
    flex-direction: column-reverse;
  }
  .about-timeline .timeline-date .lettering,
  .about-timeline .timeline-date .timeline-image {
    width: 100%;
  }
  .about-timeline .timeline-date .timeline-image {
    margin: 0 0 16px;
  }
  .about-quality {
    padding: 15% 10%;
  }
  .about-quality .quality {
    width: 100%;
  }

  .about-social .social-images {
    width: 100%;
  }
  .about-social .social-content {
    width: 100%;
  }

  .about-images,
  .about-images .content-images:nth-child(1),
  .about-images .content-images:nth-child(2) {
    width: 100%;
  }

  .about-social {
    padding: 40px;
  }
}