body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    height: 100vh;
}

header {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 10px 0;
    flex: 0 0 auto;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 10px 0;
    flex: 0 0 auto;
}

.table-container {
    flex: 1 1 auto;
    padding: 20px;
    overflow-y: auto;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 0 auto;
    background: #fff;
}

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

th {
    background: black;
    color: white;
}

tr:nth-child(even) {
    background-color: #f2f2f2;
}

tr img {
    width: 20px;
    height: 20px;
    margin-right: 8px;
    vertical-align: middle;
}