html, body {
    padding: 0;
    margin: 0;
    height: 100%;
}

body {
    background-color: black;
    display: flex;
    align-items: center;
    justify-content: center;
}

.explanation-display {
    color: white;
    position: absolute;
    top: 20px;
    right: 20px;
    cursor: pointer;
    color: grey;
}

.explanation {
    position: absolute;
    bottom: 0;
    padding: 30px 200px;
    background-color: #666;
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    font-size: .9em;
}

.explanation.hidden {
    display: block;
    bottom: 500px;
}

.click {
    text-decoration: underline;
    cursor: pointer;
}

.hidden {
    display: none;
    opacity: 0;
}