body{margin:0;background-color:#000;color:#39ff14;font-family:Courier New,monospace;text-align:center;padding:2rem}.retro-heading{font-size:2rem;text-shadow:0 0 10px #39ff14}.retro-button{background-color:#f0c;border:none;padding:1rem 2rem;font-size:1rem;color:#fff;font-weight:700;border-radius:12px;box-shadow:0 0 12px #f0c;cursor:pointer;transition:transform .1s ease}.retro-button:active{transform:scale(.95);box-shadow:0 0 18px #39ff14}