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

body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.app {
    width: 100%;
    max-width: 700px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.volume-wrapper {
    padding: 30px;
    display: flex;
    gap: 10px;
}

.volume {
    font-size: 4rem;
}

.volume-unit {
    font-size: .8rem;
    line-height: 3.1;
}

canvas {
    width: 75%;
    max-width: 400px;
    height: 150px;
}

.level {
    font-size: 1.1rem;
}