body {
    font-family: Arial, sans-serif;
    background: #fefbd8;
    margin: 0;
    padding: 0;
}
header {
    background: #b3e5fc;
    padding: 20px;
    text-align: center;
}
h1 {
    margin: 0;
    color: #004d40;
}
select {
    padding: 10px;
    margin-top: 10px;
}
main {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    padding: 20px;
}
.obra {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 15px;
    text-align: center;
}
.obra img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}
.acoes {
    margin-top: 10px;
}
.acoes a, .acoes audio {
    display: block;
    margin: 5px 0;
}