body {
    font-family: Arial, sans-serif;
    margin: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.container {
    max-width: 1200px;
    width: 100%;
}
.explanation {
    text-align: center;
    margin-bottom: 15px;
    padding: 15px;
    background-color: #e8e8e8;
    border-radius: 5px;
}
.songs {
    text-align: center;
    margin-bottom: 30px;
    padding: 15px;
    background-color: #E0FFFF;
    border-radius: 5px;
}
table {
    border-collapse: collapse;
    margin-bottom: 30px;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
}
td, th {
    border: 1px solid #666;
    padding: 10px;
    text-align: center;
    vertical-align: middle;
}
th {
    text-align: center;
}
.dark-bg {
    background-color: #1a1a1a;
    color: #ffffff;
}
.dark-bg td {
    border-color: #444;
}
.light-bg {
    background-color: #f0f0f0;
    color: #000000;
}
.light-bg td {
    border-color: #999;
}
.light-bg .explanation {
    background-color: #ddd;
    color: #000;
}
img {
    display: block;
    margin: 0 auto;
}

.download-img {
    width: 50px;
    height: 10px;
}
td:first-child {
    text-align: left;
}

.footer {
    background-color: gold;
    color: blue;
    text-align: center;
    margin-top: 30px;
    padding: 20px 20px 0 20px;
    font-size: 12px;
    border-radius: 10px;
}