body {
    font-family: Arial, sans-serif;
    background:#f5f5f5;
    margin:0;
}

.container {
    padding:30px;
}

h1 {
    color:#111;
}

.cards {
    display:flex;
    gap:20px;
}

.card {
    background:white;
    padding:20px;
    width:200px;
    border-radius:8px;
    box-shadow:0 2px 8px #ddd;
}

.panel {
    background:white;
    padding:25px;
    margin-top:20px;
}