body { 
    font-family: Arial, sans-serif; 
    max-width: 800px; 
    margin: 20px auto; 
    line-height: 1.6; 
}
.art-detail-title { 
    font-size: 28px; 
    font-weight: bold; 
    margin-bottom: 15px; 
}
.art-detail-time { 
    color: #888; 
    font-size: 14px; 
    margin-bottom: 20px; 
}
.art-detail-content { 
    font-size: 16px; 
    color: #333; 
}