body {
    margin: 0;
    text-align: center;
    color: black;
    font-size: 10vw;
    overflow: hidden;
}

span {
    text-stroke: 1.2px black;
    -webkit-text-stroke: 1.2px black;
    transition: all 1s
}

span.phoneme-hidden {
    color : white;
    background: initial;
    background-clip: initial;
    -webkit-background-clip: initial;
    -webkit-text-fill-color: initial;
}

ul#piano {
    margin: 0px;
    padding: 0;
}
  
ul#piano li {
    display: inline-block;
    list-style-type: none;
    padding: 0;
    margin: 0;
    font-size: 40vw;
    width: 45vw;
    line-height: 50vw;
    cursor: pointer;
}

.overlay{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    background-color: rgba(0,0,0,0.5);
}

article#image img {
    max-height: 60vh;
    max-width:80vw;
}

@media (min-aspect-ratio: 1/1) {
    ul#piano li {
        font-size: 18vw;
        width: 20vw;
        line-height: 20vw;
    }
}