body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgba(0, 0, 0, 0.8);
}

.container {
    position: relative;
    text-align: center;
}

#logo {
    cursor: pointer;
    width: 50vw; /* 50% of the viewport width */
    height: auto;
    max-width: 100%;
}

#overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    justify-content: center;
    align-items: center;
}

#overlay img {
    width: 100%;
    height: auto;
}