body {
    background-color: #d0beab;
}

.hidden {
    visibility: hidden;
    opacity: 0;
    transition: opacity 1000ms ease-in, visibility 0ms ease-in 1000ms;
}

.show {
    visibility: visible;
    opacity: 1;
    transition: opacity 100ms ease-in, visibility 1000ms ease-in;
}