header {
  height: calc(var(--vh, 1vh) * 100);
  display: flex;
  align-items: center;
  justify-content: center;
  background: url(../../images/banner.jpeg) no-repeat center center;
  background-size: cover;
}

.content {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: row;
  height: auto;
  background-size: contain;
  height: 100%;
  padding: 2rem;
  width: 80%;
}

.presentation-card {
  background: black;
  opacity: 0.8;
  padding: 2rem;
  flex: 0 1 90%;
  display: flex;
  flex-direction: column;
}

.presentation-card h1 {
  color: var(--light-text-color-1);
  font-size: 3.5rem;
  margin-bottom: 2rem;
  text-align: center;
}

.presentation-card h2 {
  color: var(--light-text-color-2);
  font-size: 2.4rem;
  margin-bottom: 4rem;
  text-align: center;
}

.presentation-card h3 {
  color: var(--light-text-color-2);
  font-size: 1.4rem;
  text-align: center;
}

.contact {
  display: flex;
  flex-grow: 1;
  justify-content: center;
  align-items: center;
  margin-bottom: 4rem;
}

.contact-item {
  margin: 0 1rem;
  display: flex;
  cursor: pointer;
}

.contact-item img {
  width: 2.2rem;
  height: 2.2rem;
  opacity: 0.8;
  cursor: pointer;
}


@media screen and (min-width: 800px) {
  .presentation-card {
    flex: 0 1 50%;
    display: flex;
  }

  .about h2 {
    font-size: 2.8rem;
  }

  .about p {
    font-size: 1.5rem;
  }

  .about {
    width: 35%;
  }

  .about p {
    font-size: 1.7rem;
  }

  .tech-stack-cards {
    grid-template-columns: repeat(4, 1fr);
  }

  .tech-stack img {
    margin-bottom: 2rem;
  }

  .tech-stack h1 {
    font-size: 2.7rem;
  }

  .tech-stack-card h2 {
    margin-bottom: 1rem;
  }

  .tech-stack-card ul {
    display: flex;
  }
}

