body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
    font-family: sans-serif;
    background-color: black;
    color: white;
   }
   
   .pulse {
    width: 180px;
    animation: pulse 2s infinite;
   }
   
   @keyframes pulse {
     0% {
    transform: scale(1);
   }
   50% {
    transform: scale(1.1);
   }
   100% {
    transform: scale(1);
   }
}