body {
    font-family: Arial, sans-serif;
    background: #f4f6f8;
    text-align: center;
}

h1 {
    margin: 20px;
}

.grid {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.card {
    background: white;
    width: 400px;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.controls {
    margin: 20px;
}

button {
    margin: 5px;
    padding: 8px 12px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
}

.low { color: green; font-weight: bold; }
.medium { color: orange; font-weight: bold; }
.high { color: red; font-weight: bold; }