body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    color: #0B0B3D;
    background: #F1ECFF;
}

header {
    background-color: #BA9FFF;
    color: #0B0B3D;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.logo {
    font-size: 24px;
    font-weight: bold;
}

.logo a{
    text-decoration: none;
    color: #0B0B3D;
}

.nav-buttons {
    display: flex;
    gap: 10px;
}

.nav-buttons a {
    text-decoration: none;
    color: #0B0B3D;
    background-color: #CFBDFF;
    padding: 10px 15px;
    border-radius: 10px;
    transition: background-color 0.3s, transform 0.3s;
    font-weight: bold;
    box-shadow: 0 3px 5px rgba(0, 0, 0, 0.1);
}

.nav-buttons a:hover {
    background-color: #E0D4FF;
    transform: translateY(-3px);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
}

    .container {
        margin: 20px 5%;
        padding: 20px;
        background-color: #FFFFFF;
        border-radius: 10px;
        box-shadow: 0px 5px 10px rgba(0, 0, 0, 0.1);
    }

    .billet-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        border-bottom: 2px solid #BA9FFF;
        padding-bottom: 10px;
        margin-bottom: 20px;
    }

    .billet-title {
        font-size: 28px;
        font-weight: bold;
    }

    .billet-info {
        font-size: 14px;
        color: #6B6B83;
    }

    .billet-content {
        margin: 20px 0;
        line-height: 1.6;
    }

    .comment-section {
        margin-top: 40px;
    }

    .comment-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .comment {
        border: 1px solid #0B0B3D;
        padding: 10px;
        margin-top: 15px;
        border-radius: 5px;
        background-color: #FFFFFF;
        box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.1);
    }

    .comment h5 {
        margin: 0;
        font-size: 16px;
        font-weight: bold;
    }

    .comment p {
        margin: 5px 0;
    }

    button {
        background-color: #BA9FFF;
        color: #0B0B3D;
        border: none;
        padding: 10px 20px;
        border-radius: 10px;
        cursor: pointer;
        transition: background-color 0.3s;
    }

    button:hover {
        background-color: #E0D4FF;
    }

    .back-button {
        display : flex; 
        justify-content: start;
        margin: 20px auto;
        text-align: center;
    }