body{font-family:Arial;margin:0;background:#f5f5f5}
header{background:#222;color:#fff;padding:15px;text-align:center}
#menu{padding:10px}
.item{background:#fff;margin:10px;padding:10px;border-radius:8px}
button{background:#25D366;color:#fff;border:none;padding:6px 10px;border-radius:5px}
.cart{position:fixed;bottom:0;width:100%;background:#fff;padding:10px;border-top:2px solid #000}