:root{--bg:#000000}
html,body{height:100%}
body{margin:0;background:var(--bg);display:flex;align-items:center;justify-content:center;font-family:system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif}
.container{max-width:90%;max-height:90%;display:flex;align-items:center;justify-content:center}
.container img{max-width:100%;max-height:100%;object-fit:contain;border-radius:8px;box-shadow:0 10px 30px rgba(0,0,0,.15)}