.hint {
    margin: 10px;
    padding: 0;
    position: absolute;
    top: 0;
    font-size: 40px;
    color: #fff;
    text-shadow: 0 0 5px #000;
    pointer-events: none;
    left: -10px;
    opacity: 0;
}

.hint.show {
    left: 0;
    opacity: 1;
    transition: opacity 0.25s ease-in-out, left 0.25s ease-in-out;
}

.hint.hide {
    left: -10px;
    opacity: 0;
    transition: opacity 0.25s ease-in-out, left 0.25s ease-in-out;
}