index.css

body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;

    font-family: "Roboto Mono", monospace;
    font-weight: 300;

    background-color: #26C6DA;
}

.share {
    display: flex;
    align-items: center;
    padding: 0.5em 1em;
    border: none;
    margin: 0;

    font: inherit;
    font-size: 24px;

    color: #fff;
    background-color: #673AB7;
}

svg {
    width: 24px;
    height: 24px;
    margin-right: 0.5em;
}

svg path {
    fill: currentColor;
}

.unsupported {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px;

    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 100;

    font-size: 32px;

    color: #FFEB3B;
    background-color: #111;
}