body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;
  background-color: #f7f7f7;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  background-color: #fff;
  padding: 20px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  border-radius: 5px;
}

h1 {
  font-size: 28px;
  font-weight: bold;
  color: #333;
  margin-top: 0;
}

.date-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

button {
  padding: 10px 20px;
  font-size: 16px;
  background-color: #007bff;
  color: #fff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

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

#selected-date {
  font-size: 20px;
}

.data-display {
  margin-top: 20px;
}

.card {
  border: 1px solid #ddd;
  border-radius: 5px;
  padding: 10px;
  margin-bottom: 20px;
}

.card h3 {
  font-size: 20px;
  font-weight: bold;
  color: #333;
  margin: 0;
  margin-bottom: 10px;
}

ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
}

li {
  font-size: 16px;
  margin-bottom: 5px;
}

/* Media query for smaller screens */
@media (max-width: 600px) {
  .container {
    padding: 10px;
  }

  button {
    font-size: 14px;
  }

  #selected-date {
    font-size: 18px;
  }

  .card h3 {
    font-size: 18px;
  }

  li {
    font-size: 14px;
  }
}