body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    background-color: #f0f2f5;
    color: #333;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 900px;
    margin: 2rem auto;
    padding: 2rem;
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.container-fluid {
    max-width: 1200px;
    margin: 20px auto;
    border: 1px solid #ccc;
    background-color: #fff;
    padding: 0;
}
.header-row {
    border-bottom: 1px solid #ccc;
    background-color: #f5f5f5;
}
.header-title {
    font-size: 1.5rem;
    font-weight: bold;
}
.header-subtitle {
    font-size: 1rem;
    font-weight: normal;
}
.nav-bar {
    background-color: #e0e0e0;
    border-bottom: 1px solid #ccc;
    padding-top: 4px; 
    padding-bottom: 8px;
}
.nav-bar .nav-link {
    font-weight: bold;
    color: #C00000;
    border-right: 1px solid #ccc;
}
.nav-bar:last-child .nav-link {
    border-right: none;
}
.nav-link:hover {
    background-color: #f3e0b9 !important;
}