body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #333;
    color: #fff;
}

header {
    background-color: #444;
    padding: 20px;
    text-align: center;
}

main {
    max-width: 1200px;
    margin: auto;
    padding: 20px;
}

.container {
    display: flex;
    justify-content: space-between;
}

.colonne {
    width: 45%;
}

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

th, td {
    border: 1px solid #555;
    padding: 8px;
    text-align: left;
}

button {
    margin: 5px;
    padding: 8px;
    cursor: pointer;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
}

button:hover {
    background-color: #3e8e41;
}

h2 {
    margin-top: 0;
}