body {
    font-family: Arial, sans-serif;
    background-color: #f4f6f8;
    margin: 0;
}

header {
    background-color: #2c3e50;
    color: white;
    padding: 15px;
    text-align: center;
}

.dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    padding: 20px;
}

.widget {
    background-color: white;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.chart-container, .table-container {
    grid-column: 1 / -1;
    background-color: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

table {
    width: 100%;
    border-collapse: collapse;
}

table th, table td {
    padding: 10px;
    border-bottom: 1px solid #ddd;
    text-align: left;
}

table th {
    background-color: #f4f4f4;
}