* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 62.5%;
}

i,
svg {
    pointer-events: none;
}

body {
    font-family: 'Raleway', sans-serif;
}

.sequencer {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    min-height: 100vh;
}

.controls {
    display: flex;
    width: 50rem;
    justify-content: space-between;
    align-items: center;
}

.controls h1 {
    width: 12rem;
}

.controls select {
    width: 13rem;
    padding: 5px;
}

.machine-controls {
    margin: 2rem;
    padding: 2rem;
    justify-content: space-between;
    align-items: center;
}

.mute-btn,
.play-btn {
    padding: 1rem;
    border: none;
}

.mute-btn.active {
    background-color: red;
}

.fa-stop {
    color: red;
}


.hihat-track,
.snare-track,
.kick-track {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 70%;
}

.pad {
    height: 5rem;
    width: 5rem;
    margin: 1rem;
}

.hihat-pad {
    background-color: #ABEFF8;
    opacity: 0.4;

}

.snare-pad {
    background-color: #F7B3E0;
    opacity: 0.4;

}

.kick-pad {
    background-color: #89E1AE;
    opacity: 0.4;

}

.hihat-pad.active {
    background-color: #067BC2;
    opacity: 1;

}

.snare-pad.active {
    background-color: #E56399;
    opacity: 1;

}

.kick-pad.active {
    background-color: #226F54;
    opacity: 1;

}

.hihat,
.snare,
.kick {
    display: flex;
    width: 75%;
    justify-content: center;
}

.play-btn {
    color: limegreen;
    background-color: inherit;
    font-size: 3rem;
    cursor: pointer;
}

.tempo {
    display: flex;
    flex-direction: column-reverse;
    align-items: center;
}

.tempo p {
    font-size: 2rem;
}

.tempo input {
    margin-top: 1rem;
}

.tempo-value {
    font-size: 2rem;
}

.number-of-pads {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.number-of-pads select {
    margin-top: .5rem;
}

.number-of-pads p {
    font-size: 2rem;
}

@keyframes playTrack {
    from {
        transform: scale(1);
    }

    to {
        transform: scale(1.2);
    }
}