body,
html {
  margin: 0;
  padding: 0;
  height: 100%;
  background: #f0f2f5;
  font-family: system-ui, sans-serif;
  overflow: hidden;
}
.loader {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100vh;
  text-align: center;
  color: #333;
}
.spinner {
  width: 50px;
  height: 50px;
  border: 5px solid #e0e0e0;
  border-top: 5px solid #4a90e2;
  border-radius: 50%;
  animation: s 1s linear infinite;
  margin-bottom: 20px;
}
@keyframes s {
  to {
    transform: rotate(360deg);
  }
}
.msg {
  font-size: 1.2rem;
  color: #555;
  opacity: 0;
}
.domain {
  font-weight: bold;
  color: #4a90e2;
}