body {
    background-color: #f8f9fa;
}

.container {
    max-width: 600px;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.hidden {
    display: none;
}

.card {
    margin: 5px 0;

}

.card-img-top {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

.vote-card {
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 5px;
    margin: 2px;
    transition: background-color 0.3s;
    cursor: pointer;
}

.vote-card.selected {
    background-color: #9c3636;
    border-color: #007bff;
}

.vote-card img {
    width: 100%;
}

.vote-card .card-body {
    text-align: center;
}

@media (max-width: 768px) {
    .vote-card {
        transform: scale(0.9);
    }
}

@media (max-width: 576px) {
    .vote-card {
        transform: scale(0.8);
    }
}

#resultsChart {
    max-width: 400px;
    max-height: 400px;
    margin: 0 auto;
    display: block;
}