body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

.custom-div {
        width: 80%;
        margin: 0 auto;
        padding: 20px;
        background-color: #f8f9fa;
        border-radius: 0 0 8px 8px;
        box-shadow: 0 0 10px rgba(0,0,0,0.1);

    }

.custom-navbar {
        margin: 0 auto;
        background-color: #f8f9fa;
        border-radius: 0 0 8px 8px;
        box-shadow: 0 0 10px rgba(0,0,0,0.1);
}