.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
}

.swiper {
  width: 100%;
  height: 200px;
}

.swiper-img {
  width: 100%;
  height: 100%;
}

.section {
  width: 100%;
  margin-top: 20px;
}

.section-title {
  font-size: 24px;
  font-weight: bold;
  margin-bottom: 10px;
}

.section-content {
  font-size: 16px;
  line-height: 1.5;
}

.historian {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 10px;
}

.historian-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  margin-bottom: 10px;
}

.historian-name {
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 5px;
}

.historian-intro {
  font-size: 16px;
  line-height: 1.5;
}

.math-problem {
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 5px;
  margin-bottom: 10px;
}

.math-problem-title {
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 5px;
}

.math-problem-content {
  font-size: 16px;
  line-height: 1.5;
}