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

.container {
  max-width: 960px;
  margin: 0 auto;
}

h1, h2, h3 {
  color: #333;
}

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

.form-group {
  margin-bottom: 15px;
}

label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
}

input[type="text"],
input[type="number"],
textarea {
  width: 100%;
  padding: 8px;
  border: 1px solid #ddd;
  border-radius: 4px;
  box-sizing: border-box;
}

button {
  background-color: #5cb85c;
  color: white;
  padding: 10px 15px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
}

button:hover {
  background-color: #4cae4c;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}

table, th, td {
  border: 1px solid #ddd;
}

th, td {
  padding: 8px;
  text-align: left;
}

th {
  background-color: #f0f0f0;
  font-weight: bold;
}