body {
    background-color: #f8f9fa;
}
h1, h2 {
    color: #2c3e50;
}
.lead {
    color: #34495e;
}
.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
}
.border.rounded.p-5.bg-light {
    min-height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #888;
    font-size: 1.2rem;
}