html, body {
    margin: 0px;
    padding: 0px;
    height: 100%;
    width: 100%;
    overflow: hidden;
    background-color: #000000;
}

* {
    -webkit-tap-highlight-color: transparent;
}

#wrapper {
    display: grid;
    grid-template-rows: 1fr auto;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: #000000;
}

#mainHolder {
    position: relative;
    overflow: hidden;
    grid-row: 1;
}

#pianoHolder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

#settingsButton {
    position: absolute;
    top: calc(24px + var(--sait));
    left: calc(24px + var(--sail));
    z-index: 1000;
    font-size: 40px;
    cursor: pointer;
    color: #4CAF50;
    transition: 0.2s;
    text-shadow: 
        0px 1px 0px #000000,
        1px 0px 0px #000000,
        0px -1px 0px #000000,
        -1px 0px 0px #000000;
    font-family: fluent;
    font-weight: 600;
}

#featureHolder {
    position: absolute;
    top: calc(24px + var(--sait));
    right: calc(24px + var(--sair));
}

#featureHolder img {
    width: 40px;
    height: 40px;
    cursor: pointer;
    transition: 0.2s;
    border-radius: 12px;
}

#adUnit {
    grid-row: 2;
}