.user-info {
  display: flex;
  flex-direction: column;
  font-family: Arial, sans-serif;
  border: 1px solid #ccc;
  padding: 10px;
  margin: 10px 0;
  background-color: #f9f9f9;
}
.user-info h3 {
  margin-top: 0;
  color: #333;
}
.user-info p {
  margin: 5px 0;
}
.error-message {
  color: red;
  font-weight: bold;
  margin-top: 10px;
  width: 100%;
  text-align: center;
}
.user-details {
  display: flex;
  justify-content: space-between;
}
.user-details > div {
  width: 48%;
}
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(0, 0, 0, 0.1);
  border-top: 4px solid #3498db;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 20px auto;
}
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
.spinner-18px {
  width: 18px;
  height: 18px;
  margin: 10px auto;
}