*{
   margin:0;
}

body {
  display: flex;
  width: 100vw;
  height: 100vh;
  background: black;
  align-items: center;
  justify-content: center;
}

div {
  text-align: center;
}


.loader {
  border: 8px solid #f3f3f3;
  border-top: 8px solid #3498db;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  animation: spin 2s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}