body {
    background-color: #111111;
}

div {
    width: 100%;
    height: 80vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

h1 {
    font-size: 120px;
    color: PaleGoldenRod;  
    text-transform: uppercase;
    animation: pulsate 3s infinite;
}

@keyframes pulsate {
    0% { 
        opacity: 0.6;
        font-variation-settings: "wght" 380; 
        letter-spacing: -3px;
    }

    50% { 
        opacity: 1.0;
        font-variation-settings: "wght" 580; 
        letter-spacing: 1px;
      }
  
    100% { 
        opacity: 0.6;
        font-variation-settings: "wght" 380; 
        letter-spacing: -3px;
    }
}