.step {
    width: 50px;
    height: 50px;
    background-color: rgb(202, 202, 202);
    cursor: pointer;
}

.on {
    background-color: rgb(255, 138, 138);
}

table {
    float: left;
}

#playbtn {

    width: 80px;
    background-color: rgb(147, 255, 147);
    cursor: pointer;
    font-size: 1rem;
    
}

.playhead-cell {
    width: 50px;
    height: 25px;
    background-color: lightyellow;
}

.active {
    background-color: lime;
}

body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.sequencer {
    flex-direction: row;
    justify-content: center;
    align-items: center;
}

header {
    margin: 20px;
}

h1 {
    margin: 0;
}