.a4-page {
  width: 210mm;
  min-height: 297mm;
  padding: 20mm;
  background: white;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}
.divider-line {
  height: 2px;
  background: black;
  width: calc(100% + 40mm); /* remove left+right padding */
  margin-left: -20mm;
  margin-right: -20mm;
  margin-top: 10px;
  margin-bottom: 10px;
}

/* 20% section for images */
.top-images {
  height: 20%;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* 20% section for logo */
.logo-section {
  height: 20%;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* 60% two-column section */
.content-columns {
  height: 60%;
  display: flex;
  gap: 20px;
}

.column {
  flex: 1;
  padding: 10px;
  border: 1px solid #ddd;
}