body {
  font-family: sans-serif;
  margin: 20px;
  background-color: #f4f4f4;
  color: #333;
}

h1 {
  text-align: center;
  color: #2c3e50;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 20px;
  padding: 15px;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.controls > div,
.controls > fieldset {
  flex: 1 1 200px; /* Flex grow, shrink, basis */
  display: flex;
  flex-direction: column;
  gap: 8px;
}

fieldset {
  border: 1px solid #ccc;
  padding: 10px;
  border-radius: 4px;
}

legend {
  font-weight: bold;
  color: #2c3e50;
}

label {
  font-weight: bold;
}

input[type="text"],
input[type="number"],
select {
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
}

button {
  padding: 10px 15px;
  background-color: #3498db;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

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

#summary {
  margin-bottom: 15px;
  padding: 10px;
  background-color: #e9ecef;
  border-radius: 4px;
}

#summary p {
  margin: 5px 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
  background-color: #fff;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

th,
td {
  border: 1px solid #ddd;
  padding: 10px;
  text-align: left;
}

th {
  background-color: #3498db;
  color: white;
}

tr:nth-child(even) {
  background-color: #f9f9f9;
}

tr:hover {
  background-color: #f1f1f1;
}

a {
  color: #3498db;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}