body,
html {
  margin: 0;
  padding: 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-color: #f0f2f5;
}

.chart-container {
  width: 100%;
  height: 80%;
  max-width: 1200px;
  max-height: 700px;
  padding: 20px;
  box-sizing: border-box;
  background-color: #ffffff;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

canvas {
  width: 100% !important;
  height: 100% !important;
}

.last-updated {
  text-align: center;
  margin-top: 10px;
  font-size: 14px;
  color: #555;
}