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

#app {
    text-align: center;
}

#sequencer {
    display: grid;
    grid-template-columns: repeat(16, 1fr);
    gap: 2px;
    margin-bottom: 20px;
}

.step {
    width: 30px;
    height: 30px;
    border: 1px solid #ccc;
    background-color: #fff;
    cursor: pointer;
}

.step.active {
    background-color: #4CAF50;
}

#controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

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

#tempoSlider {
    width: 200px;
}