body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  background-image: linear-gradient(
      rgba(20, 10, 60, 0.7),
      rgba(20, 10, 60, 0.7)
    ),
    url("./Photos/programback.jpeg");
  margin: 0;
  padding: 20px;
  color: white;
}

h1 {
  text-align: center;
}

.timetable,
.edit-section {
  margin: 20px auto;
  width: 80%;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 10px;
  text-align: center;
}

form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  border: solid 1px green;
  border-radius: 10px;
  padding: 20px;
  background-color: #fff;
}

.form-action-buttons {
  text-align: center;
}

button,
input[type="submit"] {
  padding: 10px 20px;
  background-color: green;
  color: white;
  border: none;
  cursor: pointer;
  border-radius: 5px;
}

button:hover,
input[type="submit"]:hover {
  background-color: darkgreen;
}

td.selected {
  background-color: #d3d3d3;
}