body {
  background-color: #1f2d3d;
  color: white;
  font-family: Arial, sans-serif;
  padding: 20px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 50px;
}

th, td {
  padding: 12px;
  text-align: center;
}

th {
  background-color: #2c3e50;
}

tr:nth-child(even) {
  background-color: #263545;
}

.late {
  background-color: red;
  color: white;
  font-weight: bold;
}

.button {
  padding: 6px 12px;
  border: none;
  color: white;
  cursor: pointer;
  font-weight: bold;
}

.button.update {
  background-color: #3498db;
}

.button.delete {
  background-color: #e74c3c;
  margin-left: 5px;
}

.button.update:hover {
  background-color: #2980b9;
}

.button.delete:hover {
  background-color: #c0392b;
}