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<html>
<head>
<style>
html {
font-family: sans-serif;
background: #000;
}
body {
display: flex;
flex-direction: column;
align-items: center;
padding: 50px;
}
header {
color: #fff;
text-align: center;
margin-bottom: 50px;
}
a {
color: #2d68ff;
}
.chords li {
display: inline-block;
color: #fff;
padding: 20px 40px;
font-size: 1.5em;
margin: 20px;
border-radius: 10px;
background: #292929;
}
.keys {
display: flex;
height: 200px;
list-style: none;
background: #fff;
padding: 0;
}
.key {
width: 50px;
border: 2px solid #000;
}
.key.black {
width: 40px;
height: 160px;
margin: 0 -20px;
border: none;
background: #000;
z-index: 9;
}
.key.selected {
background: #2d68ff;
}
</style>
</head>
<body></body>
</html>