/* style.css */  

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
} 

header {
  background-color: #2c3e50;
  color: #fff;
  padding: 1rem;
  text-align: center;
}

main {
  padding: 2rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.chart-container {
  background: #fff;
  border-radius: 8px;
  padding: 1rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}