body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #f9f9f9;
}
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #007bff;
    color: white;
    padding: 10px 20px;
}
nav a {
    color: white;
    margin-left: 15px;
    text-decoration: none;
    font-weight: bold;
}
.container {
    padding: 20px;
}
.rifa-card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 0 5px rgba(0,0,0,0.1);
    margin-bottom: 30px;
    overflow: hidden;
}
.rifa-header {
    padding: 15px;
    border-bottom: 1px solid #eee;
}
.rifa-body {
    padding: 15px;
}
.gallery {
    display: flex;
    overflow-x: auto;
    gap: 10px;
}
.gallery img {
    height: 150px;
    border-radius: 6px;
}
.progress-bar {
    background: #e0e0e0;
    border-radius: 20px;
    overflow: hidden;
    height: 20px;
    margin-top: 10px;
}
.progress-fill {
    background: #28a745;
    height: 100%;
    text-align: center;
    color: white;
    font-size: 12px;
    line-height: 20px;
}
.btn-detalles {
    display: inline-block;
    margin-top: 15px;
    padding: 8px 12px;
    background: #007bff;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
}
@media (max-width: 768px) {
    .gallery img {
        height: 100px;
    }
}