/* style.css */
body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
}

#piano {
    display: flex;
    position: relative;
    margin-top: 20px;
}

.white-key {
    width: 60px;
    height: 200px;
    background-color: white;
    border: 1px solid #ccc;
    border-radius: 0 0 5px 5px;
    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 10px;
    z-index: 1;
}

.white-key:active {
    background-color: #ddd;
}

.black-key {
    width: 40px;
    height: 120px;
    background-color: black;
    border: 1px solid #000;
    border-radius: 0 0 5px 5px;
    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    position: absolute;
    z-index: 2;
}

.black-key:active {
    background-color: #333;
}

.black-key[data-note="C#4"] { left: 45px; }
.black-key[data-note="D#4"] { left: 105px; }
.black-key[data-note="F#4"] { left: 225px; }
.black-key[data-note="G#4"] { left: 285px; }
.black-key[data-note="A#4"] { left: 345px; }

#controls {
    margin-top: 20px;
}

button {
    padding: 10px 20px;
    margin: 0 10px;
    font-size: 16px;
    cursor: pointer;
}