#donate-button-wrapper
{
    position: fixed;
    display: flex;
    align-content: center;
    justify-content: center;
    width: 100%;
    z-index: 1;
}

#donate-button
{
    background-color: #800080;
    font-size: max(2.5vmin, 20px);
    border-radius: 1vmin;
    padding: 1vmin;
    /* CSS cursor isn't set here because element is covered by #universe-fg. Cursor instead handled in code in
      UniverseViewBase. */
}