body{font-family:Arial,Helvetica,sans-serif;margin:0;padding:0}
header{background:#0b0b0b;color:#fff;padding:12px;display:flex;justify-content:space-between;align-items:center}
.product{border:1px solid #ddd;padding:12px;margin:12px;display:inline-block;width:200px;vertical-align:top}
#cart{position:fixed;right:12px;top:80px;background:#fff;border:1px solid #ccc;padding:12px;width:320px;box-shadow:0 4px 10px rgba(0,0,0,0.1)}
.hidden{display:none}
.admin-link{color:#fff}