body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f9;
}

.container {
  max-width: 1200px;
  margin: 20px auto;
  padding: 20px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

h1, h2 {
  color: #333;
}

.form-container {
  margin-bottom: 20px;
}

form {
  display: flex;
  flex-direction: column;
}

form label {
  margin-top: 10px;
}

form input, form button {
  padding: 10px;
  margin-top: 5px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

form button {
  background-color: #007bff;
  color: white;
  cursor: pointer;
}

form button:hover {
  background-color: #0056b3;
}

.portfolio-container table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

.portfolio-container th, .portfolio-container td {
  border: 1px solid #ddd;
  padding: 8px;
  text-align: center;
}

.portfolio-container th {
  background-color: #007bff;
  color: white;
}

.chart-container {
  margin-top: 40px;
}