.prepri-section {
    width: 95%;
    margin: 20px auto;
    font-family: 'Arial', sans-serif;
}

.prepri-section h2 {
    text-align: center;
    margin-bottom: 20px;
    color: #0277bd; /* azul fuerte */
}

.prepri-table {
    width: 100%;
    border-collapse: collapse;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    border-radius: 10px;
    overflow: hidden;
}

.prepri-table th, .prepri-table td {
    padding: 12px 15px;
    text-align: left;
}

.prepri-table thead {
    background-color: #0288d1; /* azul celeste */
    color: white;
}

.prepri-table tbody tr:nth-child(even) {
    background-color: #e1f5fe; /* azul claro */
}

.prepri-table tbody tr:hover {
    background-color: #b3e5fc;
    transition: 0.3s;
}

.prepri-cont-volver {
    width: 100%;
    margin-top: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.prepri-boton-volver {
    padding: 10px 20px;
    background-color: #0288d1;
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
}

.prepri-boton-volver:hover {
    background-color: #0277bd;
}