.content-container {
  display: flex;
  flex-wrap: wrap;
  margin: 20px;
  gap: 30px;
}

.container {
  max-width: 90%;
  margin: 0 auto;
  padding: 0 20px;
  padding-top: 10vh;
}

.main-content {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  width: 100%;
}

.hero {
  flex: 1 1 60%;
  max-width: 60%;
}

.extinction-image {
  margin-top: 30px;
  width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.extinction-image:hover {
  transform: scale(1.02);
}

.sidebar {
  flex: 1 1 35%;
  background-color: rgb(39, 39, 75);
  color: #fff;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  align-self: flex-start;
}

.sidebar h3 {
  margin-top: 0;
  color: #ecf0f1;
  font-size: 1.4rem;
  padding-bottom: 10px;
  border-bottom: 2px solid #3498db;
}

.sidebar ul {
  list-style: none;
  padding: 0;
  margin: 20px 0;
}

.sidebar ul li {
  margin-bottom: 15px;
  padding-bottom: 15px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar ul li:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 30px;
}

.sidebar ul li a {
  color: #ecf0f1;
  text-decoration: none;
  transition: all 0.3s ease;
  display: block;
  font-size: 1.15rem;
}

.sidebar ul li a:hover {
  color: rgb(191, 191, 236);
  padding-left: 5px;
}

.description {
  flex: 1 1 100%;
  padding: 25px;
  background-color: white;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  margin-top: 20px;
}

.description h2 {
  color: #2c3e50;
  margin-top: 0;
  font-size: 2.2rem;
  border-bottom: 2px solid #3498db;
  padding-bottom: 10px;
  margin-bottom: 20px;
}

.description p {
  margin-bottom: 20px;
  font-size: 1.4rem;
  line-height: 1.7;
}

.additional-content {
  margin: 30px 20px;
  padding: 25px;
  background-color: white;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.additional-content h3 {
  color: #2c3e50;
  font-size: 2rem;
  margin-top: 0;
  border-bottom: 2px solid #3498db;
  padding-bottom: 10px;
}

.additional-content p {
  font-size: 1.4rem;
  line-height: 1.7;
}

@media (max-width: 1440px) {
  .hero {
    flex: 1 1 55%;
    max-width: 55%;
  }
  .sidebar {
    flex: 1 1 40%;
  }
}

@media (max-width: 1024px) {
  .hero {
    flex: 1 1 50%;
    max-width: 50%;
  }
  .sidebar {
    flex: 1 1 45%;
  }
}

@media (max-width: 768px) {
  .content-container {
    margin: 15px;
    gap: 20px;
  }

  .hero,
  .sidebar {
    flex: 1 1 100%;
    max-width: 100%;
  }

  .description h2,
  .additional-content h3 {
    font-size: 2rem;
  }

  .description p,
  .additional-content p {
    font-size: 1.3rem;
  }
}

@media (max-width: 425px) {
  .content-container {
    margin: 10px;
    gap: 15px;
  }

  .sidebar {
    padding: 15px;
  }

  .description,
  .additional-content {
    padding: 15px;
  }

  .description h2,
  .additional-content h3 {
    font-size: 1.8rem;
  }

  .description p,
  .additional-content p {
    font-size: 1.2rem;
  }
}

@media (max-width: 375px) {
  .description h2,
  .additional-content h3 {
    font-size: 1.7rem;
  }

  .description p,
  .additional-content p {
    font-size: 1.1rem;
  }
}

@media (max-width: 320px) {
  .description h2,
  .additional-content h3 {
    font-size: 1.6rem;
  }

  .description p,
  .additional-content p {
    font-size: 1rem;
  }
}