.pdf_section {
  padding: 50px 0;
}
.pdf_list {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 50px;
}
.pdf_list .pdf {
  max-width: 25%;
  flex-basis: 25%;
  cursor: pointer;
}
.pdf_list .pdf .pdf_content {
  display: flex;
  justify-content: start;
  align-items: center;
  flex-direction: column;
  gap: 10px;
}
.pdf_list .pdf .pdf_content img {
  width: 50px;
  height: 50px;
  object-fit: cover;
}